APA (7th ed.) Citation

Individual Learning Systems, Inc, Terrace, H. S., & Parker, S. (1971). Psychological statistics. Individual Learning Systems Inc..

Chicago Style (17th ed.) Citation

Individual Learning Systems, Inc, Herbert S. Terrace, and Scott Parker. Psychological Statistics. San Rafael, Calif.: Individual Learning Systems Inc., 1971.

MLA (9th ed.) Citation

Individual Learning Systems, Inc, et al. Psychological Statistics. Individual Learning Systems Inc., 1971.