Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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