[1] Exodus 20:12; Deut. 5:16
[2] Jerusalem Talmud (Peah 1:1)
[3] Midrash Rabba Shir HaShirim 4:2;Yalkut Shimoni Psalms 691
[4] Meshech Chachma and K'tav Sofer (V'etchanan)
[5] Kiddushin 30b
[6] Sefer HaChinuch 33
[7] Exodus 20:12; Deut. 5:16
[8] Leviticus 19:3
[9] Yoreh De'ah 240:4. If the parent has no money for food, the child is responsible to pay (Yoreh De'ah 240:5).
[10] Biur HaGra (YD 240:36)
[11] Aruch HaShulchan (YD 240:36)
[12] Maimonides (Mamrim 6:3); Chayei Adam 67:4
[13] Kiddushin 31b
[14] The Fifth Commandment by Rabbi Moshe Lieber, pg. 90
[15] Sefer HaChassidim 575
[16] Rabbi Y.S. Eliyashiv, cited in Morah Horim V'Kibbudam. In general, the cost of caring for parents is divided between the children, according to the ability to pay (Rema Yoreh De'ah 240:5).
[17] Talmud Kiddushin 31a
[18] Exodus 20:12
[19] The Fifth Commandment, pg. 28, citing Rabbi Yosef Chaim Sonnenfeld
[20] Ohr HaChaim (Leviticus 19:3)
[21] Chayei Adam 67:3
[22] Sefer HaYirah s.v. U'Me'od Yesh
[23] Chayei Adam 67:1
[24] Rabbi Chaim Shmuelevitz (Sichot Mussar 5731:22)
[25] Rabbi Noah Weinberg, 48 Ways to Wisdom (#32)
[26] Ha'emek Davar (Deut. 5:16)
[27] Yoreh De'ah 240:6
[28] Yoreh De'ah 240:7. The Ashkenazi practice is to stand for a parent once in the morning and once in the evening (Rema Yoreh De'ah 242:16). Sefardim stand every time a parent enters the room (Birkei Yosef YD 242:21).
[29] Yoreh De'ah 240:4
[30] Yoreh De'ah 240:15, based on Leviticus 19:3 with Rashi. This includes posthumous requests, such as to cremate the parent's body (Achiezer 3:72, based on Maimonides Avel 12:1), or not to say Kaddish (Yabia Omer, vol. 6 YD 31:4).
[31] The Fifth Commandment, pg. 127
[32] Aruch HaShulchan (YD 240:41); Beit Lechem Yehuda (YD 240:15). Birkei Yosef (YD 240:10) limits this to things that are life-threatening.
[33] Rema Yoreh De'ah 240:25
[34] Yoreh De'ah 240:13, 25
[35] Mabit 1:139. However, Binat Adam (based on Tashbatz 3:288) contends that with regard to moving to Israel, parents' wishes must be respected.
[36] Yoreh De'ah 240:2
[37] Yoreh De'ah 240:2
[38] Yoreh De'ah 240:11; Aruch HaShulchan (YD 240:33)
[39] Yoreh De'ah 240:2
[40] Chayei Adam 67:8
[41] Yoreh De'ah 240:2
[42] Shu"t Igros Moshe (YD 1:133)
[43] Rema Yoreh De'ah 240:8, with Taz 10
[44] Rema Yoreh De'ah 242:16, Even Ha'ezer 23:6
[45] Yoreh De'ah 240:8
[46] Yoreh De'ah 241:6, based on Deut. 27:16
[47] Exodus 21:15, Leviticus 20:9; Yoreh De'ah 241:1 with Rema. All things being equal, a child should avoid administering assistance to a parent that would result in bleeding e.g. removing a splinter, performing surgery or dental treatment (Yoreh De'ah 241:3).
[48] Yoreh De'ah 240:9
[49] Yoreh De'ah 240:9
[50] Ben Ish Chai (vol. 2, Parshat Shoftim 14)
[51] Sdei Chemed (Ma'arechet Kaf 104)
[52] Talmud - Shabbat 134a; Yalkut Yosef (Kibud Av V'Em 8:5); Yabia Omer (vol. 5 YD 21, EH 7:7)
[53] Beit Yosef (OC 284); Rema Yoreh De'ah 249:16
[54] Chayei Adam 67:6
[55] Gesher HaChaim 1:31:1
[56] K'tav Sofer (OC 65)
[57] Talmud Yevamot 122a, with Rashi; Aruch HaShulchan (YD 376:13)
[58] Kitzur Shulchan Aruch 143:21; Ma'alot HaMidot (Ma'alot Kibud Av V'Em); Kitzur Shulchan Aruch 143:21
[59] Rema Yoreh De'ah 240:24; Aruch HaShulchan (YD 240:44)
[60] Yoreh De'ah 240:24, with Taz 19. This is learned from Moses honoring his father-in-law, Yitro (Exodus 18:7, Mechilta 18:6).
[61] Yoreh De'ah 240:21
[62] Birkei Yosef (YD 240:17); Gilyon Maharsha (YD 240:22); Pitchei Teshuva (YD 240:19); see Nachmanides to Genesis 32:5, Exodus 15:20
[63] Birkei Yosef (YD 240:18)
[64] Rema Yoreh De'ah 240:24
[65] Shach (YD 240:22); Yalkut Yosef 14:13
[66] Sefer HaChassidim 574. This can cause parents anguish even after they have passed away.
[67] Yoreh De'ah 240:18, 241:4 (If the parent is an extremely wicked person, a rabbi should be consulted.)v [68] Yoreh De'ah 240:3
[69] Kiddushin 31a
[70] Aruch HaShulchan (YD 240:16, 33); Sefer HaChassidim 343
[71] Yoreh De'ah 240:19
[72] Abarbenel (Parshat Yitro 20:12); Torat HaMincha (Drasha 24)
[73] Maimonides (Mamrim 6:1); Sefer HaChinuch 33
[74] heard from Rabbi Noach Orlowek
[75] Abarbanel (Parshat Yitro 20:12)