Doyle, J. (1985). Altered harvest: Agriculture, genetics and the fate of the world's food supply. New York: Viking Penguin.
استشهاد بنمط شيكاغوDoyle, Jack. Altered Harvest: Agriculture, Genetics and the Fate of the World's Food Supply. New York: Viking Penguin, 1985.
MLA استشهادDoyle, Jack. Altered Harvest: Agriculture, Genetics and the Fate of the World's Food Supply. New York: Viking Penguin, 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.