Cita APA (7a ed.)
Amacher, R. C., & Ulbrich, H. H. (1989). Principles of Macroeconomics (4. ed.). South-Western Publ. Co.
Cita Chicago Style (17a ed.)
Amacher, Ryan C., y Holley H. Ulbrich. Principles of Macroeconomics. 4. ed. Cincinnati: South-Western Publ. Co, 1989.
Cita MLA (9a ed.)
Amacher, Ryan C., y Holley H. Ulbrich. Principles of Macroeconomics. 4. ed. South-Western Publ. Co, 1989.
Precaución: Estas citas no son 100% exactas.