APA (7th ed.) Citation

Oxford University Press, Chrystal, K. A., & Lipsey, R. G. (1995). An introduction to positive economics (8th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Oxford University Press, K. Alec Chrystal, and Richard G. Lipsey. An Introduction to Positive Economics. 8th ed. New York: Oxford University Press, 1995.

MLA (8th ed.) Citation

Oxford University Press, et al. An Introduction to Positive Economics. 8th ed. Oxford University Press, 1995.