APA (7th ed.) Citation

Henry, M. (1997). Online Directories for Library Catalogs on the Internet.

Chicago Style (17th ed.) Citation

Henry, Marcia. Online Directories for Library Catalogs on the Internet. 1997.

MLA (9th ed.) Citation

Henry, Marcia. Online Directories for Library Catalogs on the Internet. 1997.

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