Cita APA (7th ed.)

SCHILLER, B. R., TANSEY, M. M., & ZIEGLER, L. F. (1989). Study guide for the economy today.-- Ed.4. Random House.

Cita Chicago (17th ed.)

SCHILLER, Bradley R., Michael M. TANSEY, i Lawrence F. ZIEGLER. Study Guide for the Economy Today.-- Ed.4. New York: Random House, 1989.

Cita MLA (9th ed.)

SCHILLER, Bradley R., et al. Study Guide for the Economy Today.-- Ed.4. Random House, 1989.