APA (7th ed.) Citation

Graybill, D., Klein, J. K., & Unterman, C. (1984). Computer aptitude tests. Arco Pub..

Chicago Style (17th ed.) Citation

Graybill, Donald, J. Ken Klein, and Celia Unterman. Computer Aptitude Tests. New York: Arco Pub., 1984.

MLA (9th ed.) Citation

Graybill, Donald, et al. Computer Aptitude Tests. Arco Pub., 1984.