Gaya APA

Schiller, B, R. (1980). The Economy Today : Study guide to accompany Schiller (ed.4.). New York: Mc Graw- Hill Book Co.

Gaya MLA

Schiller, Bradley, R. "The Economy Today : Study guide to accompany Schiller". ed.4. New York: Mc Graw- Hill Book Co, 1980. Text.