APA (7th ed.) Citation

Decker, R., & Hirshfield, S. (1994). The analytical engine: An introduction to computer science using hypercard 2.1. PWS.

Chicago Style (17th ed.) Citation

Decker, Rick, and Stuart Hirshfield. The Analytical Engine: An Introduction to Computer Science Using Hypercard 2.1. Boston: PWS, 1994.

MLA (9th ed.) Citation

Decker, Rick, and Stuart Hirshfield. The Analytical Engine: An Introduction to Computer Science Using Hypercard 2.1. PWS, 1994.

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