Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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