Cita APA (7a ed.)

Hamann, E. (1972). Expansion of the Public Library Card Catalog in a Large Library.

Cita Chicago Style (17a ed.)

Hamann, Edmund. Expansion of the Public Library Card Catalog in a Large Library. 1972.

Cita MLA (9a ed.)

Hamann, Edmund. Expansion of the Public Library Card Catalog in a Large Library. 1972.