Citazione Stile APA (7a Edizione)

SILK, L. S. (1975). Contemporary economics: Principles and Issues (2nd ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

SILK, Leonard S. Contemporary Economics: Principles and Issues. 2nd ed. New York: McGraw-Hill, 1975.

Citatione MLA (9a ed.)

SILK, Leonard S. Contemporary Economics: Principles and Issues. 2nd ed. McGraw-Hill, 1975.