APA aipamena

McMurray, J. G., Feldman, R. A., Auerbach, S. M., DeRiesthal, H., & Wilson, N. (2007). Long-term safety and effectiveness of sildenafil citrate in men with erectile dysfunction. Dove Medical Press.

Chicago Style aipamena

McMurray, James G., Robert A. Feldman, Stephen M. Auerbach, Herb DeRiesthal, and Neal Wilson. Long-term Safety and Effectiveness of Sildenafil Citrate in Men With Erectile Dysfunction. Dove Medical Press, 2007.

MLA aipamena

McMurray, James G., et al. Long-term Safety and Effectiveness of Sildenafil Citrate in Men With Erectile Dysfunction. Dove Medical Press, 2007.