APA Style

Principles of economics. (1979). London: The Macmillan Press Ltd..

Chicago Style

Principles of economics. . London: The Macmillan Press Ltd., 1979. Text.

MLA Style

Principles of economics. . London: The Macmillan Press Ltd., 1979. Text.

Turabian Style

Principles of economics. London: The Macmillan Press Ltd., 1979. Print.