APA (7th ed.) Citation

Morris, M., Epstein, H., & Wawer, M. Timing is everything: International variations in historical sexual partnership concurrency and HIV prevalence. Public Library of Science (PLoS).

Chicago Style (17th ed.) Citation

Morris, Martina, Helen Epstein, and Maria Wawer. Timing Is Everything: International Variations in Historical Sexual Partnership Concurrency and HIV Prevalence. Public Library of Science (PLoS).

MLA (9th ed.) Citation

Morris, Martina, et al. Timing Is Everything: International Variations in Historical Sexual Partnership Concurrency and HIV Prevalence. Public Library of Science (PLoS).