APA (7th ed.) Citation

Smits, E. R., & Abaelard, P. (1983). Peter Abelard, letters IX - XIV: An edition with an introduction. Bouma.

Chicago Style (17th ed.) Citation

Smits, Edmé R., and Peter Abaelard. Peter Abelard, Letters IX - XIV: An Edition with an Introduction. Groningen: Bouma, 1983.

MLA (9th ed.) Citation

Smits, Edmé R., and Peter Abaelard. Peter Abelard, Letters IX - XIV: An Edition with an Introduction. Bouma, 1983.

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