APA (7th ed.) Citation

MaranGraphics' Development Group, Maran, R., & Feistmantl, E. (1994). Computers simplified. IDG Books.

Chicago Style (17th ed.) Citation

MaranGraphics' Development Group, Richard Maran, and Eric Feistmantl. Computers Simplified. San Mateo, Calif.: IDG Books, 1994.

MLA (8th ed.) Citation

MaranGraphics' Development Group, et al. Computers Simplified. IDG Books, 1994.