Cita APA (7th ed.)

Williams, A. T., Katz, M. L., & Rosen, H. S. (1991). Workbook for use with: Microeconomics. Irwin.

Cita Chicago (17th ed.)

Williams, Andrew T., Michael L. Katz, i Harvey S. Rosen. Workbook for Use with: Microeconomics. Homewood, Ill: Irwin, 1991.

Cita MLA (9th ed.)

Williams, Andrew T., et al. Workbook for Use with: Microeconomics. Irwin, 1991.