APA (7th ed.) Citation

Hack, D. B. (1993). Telephone companies---and six other contributors to competition in local telephone service. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

Hack, David B. Telephone Companies---and Six Other Contributors to Competition in Local Telephone Service. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1993.

MLA (9th ed.) Citation

Hack, David B. Telephone Companies---and Six Other Contributors to Competition in Local Telephone Service. Congressional Research Service, Library of Congress, 1993.