Citazione Stile APA (7a Edizione)

Stefferud, A., & Briggs, S. (1956). The wonders of seeds. Harcourt, Brace and Company.

Citazione stile Chigago Style (17a edizione)

Stefferud, Alfred, e Shirley Briggs. The Wonders of Seeds. New York: Harcourt, Brace and Company, 1956.

Citatione MLA (9a ed.)

Stefferud, Alfred, e Shirley Briggs. The Wonders of Seeds. Harcourt, Brace and Company, 1956.