APA način citiranja (7. izdanje)

Helgeson, E. A. (1957). Methods of weed control. Food and Agriculture Organization of the United Nations.

Čikaški stil citiranja (17. izdanje)

Helgeson, Earl A. Methods of Weed Control. Rome: Food and Agriculture Organization of the United Nations, 1957.

MLA način citiranja (9. izdanje)

Helgeson, Earl A. Methods of Weed Control. Food and Agriculture Organization of the United Nations, 1957.