Baker, R.Robin; Bellis, Mark A. (1993). "Human sperm competition: ejaculate adjustment by males and the function of masturbation". Animal Behaviour. 46 (5): 861–885. doi:10.1006/anbe.1993.1271. ISSN0003-3472. S2CID53201940.
Anderson, Kermyt G. (1 June 2006). "How Well Does Paternity Confidence Match Actual Paternity? Evidence from Worldwide Nonpaternity Rates". Current Anthropology. 47 (3): 513–520. doi:10.1086/504167. ISSN0011-3204. S2CID56318457.
Baker, R.Robin; Bellis, Mark A. (1993). "Human sperm competition: ejaculate adjustment by males and the function of masturbation". Animal Behaviour. 46 (5): 861–885. doi:10.1006/anbe.1993.1271. ISSN0003-3472. S2CID53201940.
Anderson, Kermyt G. (1 June 2006). "How Well Does Paternity Confidence Match Actual Paternity? Evidence from Worldwide Nonpaternity Rates". Current Anthropology. 47 (3): 513–520. doi:10.1086/504167. ISSN0011-3204. S2CID56318457.
Baker, R.Robin; Bellis, Mark A. (1993). "Human sperm competition: ejaculate adjustment by males and the function of masturbation". Animal Behaviour. 46 (5): 861–885. doi:10.1006/anbe.1993.1271. ISSN0003-3472. S2CID53201940.
Anderson, Kermyt G. (1 June 2006). "How Well Does Paternity Confidence Match Actual Paternity? Evidence from Worldwide Nonpaternity Rates". Current Anthropology. 47 (3): 513–520. doi:10.1086/504167. ISSN0011-3204. S2CID56318457.