APA Format
World Health Organization (WHO) . (). Biological components of human reproduction, studies of their variations in population groups TRS. 435. : Geneva, WHO. 1973,
MLA Format
World Health Organization (WHO) . Biological components of human reproduction, studies of their variations in population groups TRS. 435. : Geneva, WHO. 1973,,
Australian/Harvard Format
World Health Organization (WHO) . . Biological components of human reproduction, studies of their variations in population groups TRS. 435. Geneva, WHO. 1973,, 
Warning: These citations may not always be 100% accurate.