APA استشهاد

John C Gordon. (1990). Handbook on the management of agroforestry research. Winrock international.

استشهاد بنمط شيكاغو

John C Gordon. Handbook on the Management of Agroforestry Research. USA: Winrock international, 1990.

MLA استشهاد

John C Gordon. Handbook on the Management of Agroforestry Research. Winrock international, 1990.