APA (7th ed.) Citation

OPPENHEIM, F. E. (1968). Moral principles in political philosophy. Random House.

Chicago Style (17th ed.) Citation

OPPENHEIM, Felix E. Moral Principles in Political Philosophy. New York: Random House, 1968.

MLA (9th ed.) Citation

OPPENHEIM, Felix E. Moral Principles in Political Philosophy. Random House, 1968.

Warning: These citations may not always be 100% accurate.