APA (7th ed.) Citation

Willard, O. M. (1941). Jaggard's catalogue of English books.

Chicago Style (17th ed.) Citation

Willard, Oliver M. Jaggard's Catalogue of English Books. Stanford, 1941.

MLA (9th ed.) Citation

Willard, Oliver M. Jaggard's Catalogue of English Books. 1941.

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