APA (7th ed.) Citation

Bell Telephone Laboratories, Western Electric Company, inc. Patent Licensing Division, & Fagen, M. D. (1971). Impact: A compilation of Bell System innovations in science and engineering which have helped create new industries and new products. [publisher not identified].

Chicago Style (17th ed.) Citation

Bell Telephone Laboratories, inc. Patent Licensing Division Western Electric Company, and M. D. Fagen. Impact: A Compilation of Bell System Innovations in Science and Engineering Which Have Helped Create New Industries and New Products. [New York?]: [publisher not identified], 1971.

MLA (9th ed.) Citation

Bell Telephone Laboratories, et al. Impact: A Compilation of Bell System Innovations in Science and Engineering Which Have Helped Create New Industries and New Products. [publisher not identified], 1971.