Sefcek, J., & Sacco, D. (2009). Human Sexual Dimorphism, Fitness Display, and Ovulatory Cycle Effects. Behavioral and Brain Sciences. https://doi.org/10.1017/S0140525X09990240
Sefcek, Jon, and Donald Sacco. 2009. “Human Sexual Dimorphism, Fitness Display, and Ovulatory Cycle Effects”. Behavioral and Brain Sciences. https://doi.org/10.1017/S0140525X09990240.
Sefcek, J., and D. Sacco. Human Sexual Dimorphism, Fitness Display, and Ovulatory Cycle Effects. Behavioral and Brain Sciences, 1 Aug. 2009, doi:10.1017/S0140525X09990240.