Purcell, D. W., Crepaz, N., Su, J. J., Weinstock, H., Gau, Z., Denning, P., . . . Johnson, C. H. (2012). Estimating the population size of men who have sex with men in the United States to obtain HIV and syphilis rates. The open AIDS journal, 6, 98-107. doi:10.2174/1874613601206010098
Cita Chicago Style (17a ed.)Purcell, David W., et al. "Estimating the Population Size of Men Who Have Sex with Men in the United States to Obtain HIV and Syphilis Rates." The Open AIDS Journal 6 (2012): 98-107. https://doi.org/10.2174/1874613601206010098.
Cita MLA (9a ed.)Purcell, David W., et al. "Estimating the Population Size of Men Who Have Sex with Men in the United States to Obtain HIV and Syphilis Rates." The Open AIDS Journal, vol. 6, 2012, pp. 98-107, https://doi.org/10.2174/1874613601206010098.