APA Format
World Health Organization (WHO) . (). Management of patients with sexually transmitted diseases, TRS.810. : Geneva WHO 1991
MLA Format
World Health Organization (WHO) . Management of patients with sexually transmitted diseases, TRS.810. : Geneva WHO 1991,
Australian/Harvard Format
World Health Organization (WHO) . . Management of patients with sexually transmitted diseases, TRS.810. Geneva WHO 1991, 
Warning: These citations may not always be 100% accurate.