APA (7th ed.) Citation

Kimball, J. W., Jr., & Freitag, R. S. (1973). The National Union Catalog, Reference and Related Services.

Chicago Style (17th ed.) Citation

Kimball, John W., Jr., and Ruth S. Freitag. The National Union Catalog, Reference and Related Services. 1973.

MLA (9th ed.) Citation

Kimball, John W., Jr., and Ruth S. Freitag. The National Union Catalog, Reference and Related Services. 1973.

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