APA (7th ed.) Citation

Perlman, R. (1972). Theory of trade. Dryden Press.

Chicago Style (17th ed.) Citation

Perlman, Richard. Theory of Trade. Hinsdale, Ill: Dryden Press, 1972.

MLA (9th ed.) Citation

Perlman, Richard. Theory of Trade. Dryden Press, 1972.