APA (7th ed.) Citation

Wheeler, S. G., & Wheeler, G. S. (1993). Pencils to pixels: Exploring FreeHand, version 3.1. W.C. Brown.

Chicago Style (17th ed.) Citation

Wheeler, Susan G., and Gary S. Wheeler. Pencils to Pixels: Exploring FreeHand, Version 3.1. Dubuque, IA: W.C. Brown, 1993.

MLA (9th ed.) Citation

Wheeler, Susan G., and Gary S. Wheeler. Pencils to Pixels: Exploring FreeHand, Version 3.1. W.C. Brown, 1993.