APA aipamena

HENDERSON, J. V., POOLE, W., & PARISH, A. E. (1991). Student workbook for principles of economics. D.C. Heath and Company.

Chicago Style aipamena

HENDERSON, J. Vernon, William POOLE, and Albert E. PARISH. Student Workbook for Principles of Economics. Lexington: D.C. Heath and Company, 1991.

MLA aipamena

HENDERSON, J. Vernon, et al. Student Workbook for Principles of Economics. D.C. Heath and Company, 1991.