APA (7th ed.) Citation

Warner, C. D., Bryant, W. C., & Putnam, G. P. (1973). Studies of Irving. Folcroft Library Editions.

Chicago Style (17th ed.) Citation

Warner, Charles Dudley, William Cullen Bryant, and George Palmer Putnam. Studies of Irving. [Folcroft, Pa.]: Folcroft Library Editions, 1973.

MLA (9th ed.) Citation

Warner, Charles Dudley, et al. Studies of Irving. Folcroft Library Editions, 1973.