KATZ, W. A. (1992). Introduction to reference work volume I: Basic informa-tion sources.-- ed.6. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)KATZ, William A. Introduction to Reference Work Volume I: Basic Informa-tion Sources.-- Ed.6. New York: McGraw-Hill, 1992.
Lua MLA (9ú heag.)KATZ, William A. Introduction to Reference Work Volume I: Basic Informa-tion Sources.-- Ed.6. McGraw-Hill, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.