APA (7th ed.) Citation

Cohen, J. M., & Cohen, M. J. (1985). The Penguin dictionary of modern quotations (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Cohen, J. M., and M. J. Cohen. The Penguin Dictionary of Modern Quotations. 2nd ed. Harmondsworth [etc.]: Penguin, 1985.

MLA (9th ed.) Citation

Cohen, J. M., and M. J. Cohen. The Penguin Dictionary of Modern Quotations. 2nd ed. Penguin, 1985.