APA (7th ed.) Citation

Fowler, S. L., & Stanwick, V. R. (1995). The GUI style guide. AP Professional.

Chicago Style (17th ed.) Citation

Fowler, Susan L., and Victor R. Stanwick. The GUI Style Guide. Boston [etc.]: AP Professional, 1995.

MLA (9th ed.) Citation

Fowler, Susan L., and Victor R. Stanwick. The GUI Style Guide. AP Professional, 1995.

Warning: These citations may not always be 100% accurate.