APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.