Balthazart, Jacques. "General Conclusions." The Biology of Homosexuality. : Oxford University Press, 2011-12-02. Oxford Scholarship Online. 2012-01-19. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199838820.001.0001/acprof-9780199838820-chapter-011>.
Balthazart, J.(2011-12-02). General Conclusions. In The Biology of Homosexuality. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199838820.001.0001/acprof-9780199838820-chapter-011.
Balthazart, Jacques. "General Conclusions." In The Biology of Homosexuality. : Oxford University Press, 2011-12-02. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199838820.001.0001/acprof-9780199838820-chapter-011.
Balthazart J. General Conclusions. In: Balthazart J. The Biology of Homosexuality. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199838820.001.0001/acprof-9780199838820-chapter-011. Accessed May 22, 2013.