APA (7th ed.) Citation

Thomas, A. G. (1975). Great books and book collectors. Putnam.

Chicago Style (17th ed.) Citation

Thomas, Alan G. Great Books and Book Collectors. New York: Putnam, 1975.

MLA (9th ed.) Citation

Thomas, Alan G. Great Books and Book Collectors. Putnam, 1975.

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