Cita APA (7th ed.)

Gardner, H. S. (1998). Comparative economic systems (2nd ed.). Harcourt.

Cita Chicago (17th ed.)

Gardner, H. Stephen. Comparative Economic Systems. 2nd ed. Orlando: Harcourt, 1998.

Cita MLA (9th ed.)

Gardner, H. Stephen. Comparative Economic Systems. 2nd ed. Harcourt, 1998.