APA (7th ed.) Citation

Spencer, H. (1978). The principles of ethics: Introd. by Tibor R. Machan. Liberty Fund.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Principles of Ethics: Introd. by Tibor R. Machan. Indianapolis, Ind: Liberty Fund, 1978.

MLA (9th ed.) Citation

Spencer, Herbert. The Principles of Ethics: Introd. by Tibor R. Machan. Liberty Fund, 1978.

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