APA (7th ed.) Citation

Shera, J. H., & Egan, M. E. (1956). The classified catalog: Basic principles and practices. American Library Association.

Chicago Style (17th ed.) Citation

Shera, Jesse H., and Margaret E. Egan. The Classified Catalog: Basic Principles and Practices. Chicago: American Library Association, 1956.

MLA (8th ed.) Citation

Shera, Jesse H., and Margaret E. Egan. The Classified Catalog: Basic Principles and Practices. American Library Association, 1956.