APA (7th ed.) Citation

Haebler, K., Osborne, L. E., & Grolier Club. (1933). The study of incunabula. The Grolier club.

Chicago Style (17th ed.) Citation

Haebler, Konrad, Lucy Eugenia Osborne, and Grolier Club. The Study of Incunabula. New York: The Grolier club, 1933.

MLA (8th ed.) Citation

Haebler, Konrad, et al. The Study of Incunabula. The Grolier club, 1933.