"Smegma stones".

MLA

Sonnex, C., and W. G. Dockerty. “‘Smegma Stones.’” Sexually Transmitted Infections, vol. 74, no. 3, June 1998, p. 231. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=cmedm&AN=9849571&authtype=sso&custid=ns315887.

APA

Sonnex, C., & Dockerty, W. G. (1998). “Smegma stones.” Sexually Transmitted Infections, 74(3), 231.

Chicago

Sonnex, C, and W G Dockerty. 1998. “‘Smegma Stones.’” Sexually Transmitted Infections 74 (3): 231. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=cmedm&AN=9849571&authtype=sso&custid=ns315887.