Cita APA (7th ed.)

Pfefferbaum, R. (1987). Economics: Study guide (2nd ed.). Houghton Mifflin.

Cita Chicago (17th ed.)

Pfefferbaum, Rose. Economics: Study Guide. 2nd ed. Boston: Houghton Mifflin, 1987.

Cita MLA (9th ed.)

Pfefferbaum, Rose. Economics: Study Guide. 2nd ed. Houghton Mifflin, 1987.