Citazione Stile APA (7a Edizione)

ZIMERMANN'S, E. W. (1964). Introduction to world resources. Harper and Row.

Citazione stile Chigago Style (17a edizione)

ZIMERMANN'S, Erich W. Introduction to World Resources. New York: Harper and Row, 1964.

Citatione MLA (9a ed.)

ZIMERMANN'S, Erich W. Introduction to World Resources. Harper and Row, 1964.