APA (7th ed.) Citation

Bell Telephone Laboratories. Technical Information Libraries & Bell Telephone Laboratories. Technical Information Libraries. BTL talks and papers. Technical Information Libraries, Public Relations and Publication Division, Bell Telephone Laboratories.

Chicago Style (17th ed.) Citation

Bell Telephone Laboratories. Technical Information Libraries and Bell Telephone Laboratories. Technical Information Libraries. BTL Talks and Papers. [New York?]: Technical Information Libraries, Public Relations and Publication Division, Bell Telephone Laboratories.

MLA (9th ed.) Citation

Bell Telephone Laboratories. Technical Information Libraries and Bell Telephone Laboratories. Technical Information Libraries. BTL Talks and Papers. Technical Information Libraries, Public Relations and Publication Division, Bell Telephone Laboratories.