APA (7th ed.) Citation

Abelard, P., & Luscombe, D. E. (1971). Peter Abelard's Ethics. Clarendon Press.

Chicago Style (17th ed.) Citation

Abelard, Peter, and D. E. Luscombe. Peter Abelard's Ethics. Oxford: Clarendon Press, 1971.

MLA (9th ed.) Citation

Abelard, Peter, and D. E. Luscombe. Peter Abelard's Ethics. Clarendon Press, 1971.