APA (7th ed.) Citation

Else, P. (1990). Principles of microeconomics. Unwin Hyman.

Chicago Style (17th ed.) Citation

Else, Peter. Principles of Microeconomics. London: Unwin Hyman, 1990.

MLA (9th ed.) Citation

Else, Peter. Principles of Microeconomics. Unwin Hyman, 1990.