APA (7th ed.) Citation

Ringel, S. (1969). Human factors research in command information processing systems (May 1969 edition.). U.S. Army, Behavioral Science Research Laboratory.

Chicago Style (17th ed.) Citation

Ringel, Seymour. Human Factors Research in Command Information Processing Systems. May 1969 edition. Arlington, Virginia: U.S. Army, Behavioral Science Research Laboratory, 1969.

MLA (9th ed.) Citation

Ringel, Seymour. Human Factors Research in Command Information Processing Systems. May 1969 edition. U.S. Army, Behavioral Science Research Laboratory, 1969.