Citazione Stile APA (7a Edizione)

Johnson, D. (1950). Trade and agriculture: A study of inconsistent policies. John Wiley.

Citazione stile Chigago Style (17a edizione)

Johnson, D.Gale. Trade and Agriculture: A Study of Inconsistent Policies. New York: John Wiley, 1950.

Citatione MLA (9a ed.)

Johnson, D.Gale. Trade and Agriculture: A Study of Inconsistent Policies. John Wiley, 1950.