APA (7th ed.) Citation

Becker, R. W. (1974). A semiautomatic speaker recognition system. U.S. Govt. Print. Office.

Chicago Style (17th ed.) Citation

Becker, R. W. A Semiautomatic Speaker Recognition System. Washington, D.C: U.S. Govt. Print. Office, 1974.

MLA (8th ed.) Citation

Becker, R. W. A Semiautomatic Speaker Recognition System. U.S. Govt. Print. Office, 1974.