Cita APA (7a ed.)

Key, T., Roe, L., Thorogood, M., Moore, J., Clark, G., & Wang, D. (1990). Testosterone, sex hormone-binding globulin, calculated free testosterone, and oestradiol in male vegans and omnivores.

Cita Chicago Style (17a ed.)

Key, T., L. Roe, M. Thorogood, J. Moore, G. Clark, y D. Wang. Testosterone, Sex Hormone-binding Globulin, Calculated Free Testosterone, and Oestradiol in Male Vegans and Omnivores. 1990.

Cita MLA (9a ed.)

Key, T., et al. Testosterone, Sex Hormone-binding Globulin, Calculated Free Testosterone, and Oestradiol in Male Vegans and Omnivores. 1990.