Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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