APA (7th ed.) Citation

Lipsey, R. G., & Chrystal, K. A. (1999). Principles of economics (9th.ed.). Oxford Univ..

Chicago Style (17th ed.) Citation

Lipsey, Richard G., and K. Alec Chrystal. Principles of Economics. 9th.ed. Oxford: Oxford Univ., 1999.

MLA (9th ed.) Citation

Lipsey, Richard G., and K. Alec Chrystal. Principles of Economics. 9th.ed. Oxford Univ., 1999.