Blanchard, Ray; Cantor, James M.; Bogaert, Anthony F.; Breedlove, S. Marc; Ellis, Lee (2006). „Interaction of fraternal birth order and handedness in the development of male homosexuality”. Hormones and Behavior. 49 (3): 405—414. PMID16246335. S2CID16151756. doi:10.1016/j.yhbeh.2005.09.002.
Kishida, Mariana; Rahman, Qazi (2015). „Fraternal Birth Order and Extreme Right-Handedness as Predictors of Sexual Orientation and Gender Nonconformity in Men”. Archives of Sexual Behavior. 44 (5): 1493—1501. PMID25663238. S2CID30678785. doi:10.1007/s10508-014-0474-0.
Yule, Morag A.; Brotto, Lori A.; Gorzalka, Boris B. (2014). „Biological Markers of Asexuality: Handedness, Birth Order, and Finger Length Ratios in Self-identified Asexual Men and Women”. Archives of Sexual Behavior. 43 (2): 299—310. PMID24045903. S2CID5347734. doi:10.1007/s10508-013-0175-0.
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Williams, Terrance J.; Pepitone, Michelle E.; Christensen, Scott E.; Cooke, Bradley M.; Huberman, Andrew D.; Breedlove, Nicholas J.; Breedlove, Tessa J.; Jordan, Cynthia L.; Breedlove, S. Marc (2000). „Finger-length ratios and sexual orientation”. Nature. 404 (6777): 455—456. Bibcode:2000Natur.404..455W. PMID10761903. S2CID205005405. doi:10.1038/35006555.
Blanchard, Ray; Cantor, James M.; Bogaert, Anthony F.; Breedlove, S. Marc; Ellis, Lee (2006). „Interaction of fraternal birth order and handedness in the development of male homosexuality”. Hormones and Behavior. 49 (3): 405—414. PMID16246335. S2CID16151756. doi:10.1016/j.yhbeh.2005.09.002.
Kishida, Mariana; Rahman, Qazi (2015). „Fraternal Birth Order and Extreme Right-Handedness as Predictors of Sexual Orientation and Gender Nonconformity in Men”. Archives of Sexual Behavior. 44 (5): 1493—1501. PMID25663238. S2CID30678785. doi:10.1007/s10508-014-0474-0.
Yule, Morag A.; Brotto, Lori A.; Gorzalka, Boris B. (2014). „Biological Markers of Asexuality: Handedness, Birth Order, and Finger Length Ratios in Self-identified Asexual Men and Women”. Archives of Sexual Behavior. 43 (2): 299—310. PMID24045903. S2CID5347734. doi:10.1007/s10508-013-0175-0.
Blanchard, Ray; Cantor, James M.; Bogaert, Anthony F.; Breedlove, S. Marc; Ellis, Lee (2006). „Interaction of fraternal birth order and handedness in the development of male homosexuality”. Hormones and Behavior. 49 (3): 405—414. PMID16246335. S2CID16151756. doi:10.1016/j.yhbeh.2005.09.002.
Kishida, Mariana; Rahman, Qazi (2015). „Fraternal Birth Order and Extreme Right-Handedness as Predictors of Sexual Orientation and Gender Nonconformity in Men”. Archives of Sexual Behavior. 44 (5): 1493—1501. PMID25663238. S2CID30678785. doi:10.1007/s10508-014-0474-0.
Yule, Morag A.; Brotto, Lori A.; Gorzalka, Boris B. (2014). „Biological Markers of Asexuality: Handedness, Birth Order, and Finger Length Ratios in Self-identified Asexual Men and Women”. Archives of Sexual Behavior. 43 (2): 299—310. PMID24045903. S2CID5347734. doi:10.1007/s10508-013-0175-0.