APA (7th ed.) Citation

Yale University. Library, Marston, T. E., & Stillwell, M. B. (1955). Incunabula in the Yale University libraries.

Chicago Style (17th ed.) Citation

Yale University. Library, Thomas E. Marston, and Margaret Bingham Stillwell. Incunabula in the Yale University Libraries. New Haven, 1955.

MLA (8th ed.) Citation

Yale University. Library, et al. Incunabula in the Yale University Libraries. 1955.