APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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