APA-čujuhus (7. p.)
Lipsey, R. G., & Courant, P. N. (1989). An introduction to positive economics (7th ed.). Weidenfield & NicholsonLtd..
Chicago-čujuhus (17. p.)
Lipsey, Richard G., juo Paul N. Courant. An Introduction to Positive Economics. 7th ed. London: Weidenfield & NicholsonLtd., 1989.
MLA-čujuhus (9. p.)
Lipsey, Richard G., juo Paul N. Courant. An Introduction to Positive Economics. 7th ed. Weidenfield & NicholsonLtd., 1989.
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