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Langerhans, R. Brian; Anderson, Christopher M.; Heinen-Kay, Justa L. (2016-09-06). „Causes and Consequences of Genital Evolution”. Integrative and Comparative Biology. 56 (4): 741—751. ISSN1540-7063. PMID27600556. doi:10.1093/icb/icw101.
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Langerhans, R. Brian; Anderson, Christopher M.; Heinen-Kay, Justa L. (2016-09-06). „Causes and Consequences of Genital Evolution”. Integrative and Comparative Biology. 56 (4): 741—751. ISSN1540-7063. PMID27600556. doi:10.1093/icb/icw101.