Richard, L., Steiner, P. S., Purvis, D. D., & Courant, P. N. (1990). İktisat (17.bs.). Bilim Teknik yayınevi.
Chicago Style (17th ed.) CitationRichard, Lipsey,G, Peter S. Steiner, Douglas D. Purvis, and Paul N. Courant. İktisat. 17.bs. İstanbul: Bilim Teknik yayınevi, 1990.
MLA (9th ed.) CitationRichard, Lipsey,G, et al. İktisat. 17.bs. Bilim Teknik yayınevi, 1990.
Warning: These citations may not always be 100% accurate.