APA (7th ed.) Citation

ML, F., WW, L., & LI, L. (1999). Leydig cell tumors presenting as azoospermia. The Journal of urology, 161(5), 1571.

Chicago Style (17th ed.) Citation

ML, Fallick, Lin WW, and Lipshultz LI. "Leydig Cell Tumors Presenting as Azoospermia." The Journal of Urology 161, no. 5 (1999): 1571.

MLA (9th ed.) Citation

ML, Fallick, et al. "Leydig Cell Tumors Presenting as Azoospermia." The Journal of Urology, vol. 161, no. 5, 1999, p. 1571.