APA Format
World Health Organization (WHO) . (). The use of viruses for the control of insect pests and disease vectors, TRS.531. : Geneva WHO 1973
MLA Format
World Health Organization (WHO) . The use of viruses for the control of insect pests and disease vectors, TRS.531. : Geneva WHO 1973,
Australian/Harvard Format
World Health Organization (WHO) . . The use of viruses for the control of insect pests and disease vectors, TRS.531. Geneva WHO 1973, 
Warning: These citations may not always be 100% accurate.