APA (7th ed.) Citation

Kunitz, S., & Colby, V. (1967). European authors, 1000-1900: A biographical dictionary of European literature. Wilson.

Chicago Style (17th ed.) Citation

Kunitz, Stanley, and Vineta Colby. European Authors, 1000-1900: A Biographical Dictionary of European Literature. New York: Wilson, 1967.

MLA (9th ed.) Citation

Kunitz, Stanley, and Vineta Colby. European Authors, 1000-1900: A Biographical Dictionary of European Literature. Wilson, 1967.