APA (7th ed.) Citation

Wolfram, S. (1991). Mathematica: A system for doing mathematics by computer (2nd edition.). Addison-Wesley Publishing Company.

Chicago Style (17th ed.) Citation

Wolfram, Stephen. Mathematica: A System for Doing Mathematics by Computer. 2nd edition. Redwood City, CA: Addison-Wesley Publishing Company, 1991.

MLA (8th ed.) Citation

Wolfram, Stephen. Mathematica: A System for Doing Mathematics by Computer. 2nd edition. Addison-Wesley Publishing Company, 1991.