APA aipamena

Bull, J. R., Rowland, S. P., Scherwitzl, E. B., Scherwitzl, R., Danielsson, K. G., & Harper, J. (2019). Real-world menstrual cycle characteristics of more than 600,000 menstrual cycles. NPJ Digit Med.

Chicago Style aipamena

Bull, Jonathan R., Simon P. Rowland, Elina Berglund Scherwitzl, Raoul Scherwitzl, Kristina Gemzell Danielsson, and Joyce Harper. "Real-world Menstrual Cycle Characteristics of More Than 600,000 Menstrual Cycles." NPJ Digit Med 2019.

MLA aipamena

Bull, Jonathan R., et al. "Real-world Menstrual Cycle Characteristics of More Than 600,000 Menstrual Cycles." NPJ Digit Med 2019.