Citazione Stile APA (7a Edizione)

Harper, L. J., & Davis, . S. (1984). Food, nutrition and agriculture: Student workbook. FAO.

Citazione stile Chigago Style (17a edizione)

Harper, Laura Jane, e Susan Davis. Food, Nutrition and Agriculture: Student Workbook. Rome: FAO, 1984.

Citatione MLA (9a ed.)

Harper, Laura Jane, e Susan Davis. Food, Nutrition and Agriculture: Student Workbook. FAO, 1984.