APA استشهاد

Duckworth, R. B. (1966). Fruit and vegetables. Pergamon Press.

استشهاد بنمط شيكاغو

Duckworth, R B. Fruit and Vegetables. Oxford: Pergamon Press, 1966.

MLA استشهاد

Duckworth, R B. Fruit and Vegetables. Pergamon Press, 1966.