APA (7th ed.) Citation

(1997). Mathematica: A system for doing mathematics by computer ; version 2.2 ; user's guide for the X Front End (1. ed., 2. printing.). Wolfram Research.

Chicago Style (17th ed.) Citation

Mathematica: A System for Doing Mathematics by Computer ; Version 2.2 ; User's Guide for the X Front End. 1. ed., 2. printing. Champaign, Ill: Wolfram Research, 1997.

MLA (9th ed.) Citation

Mathematica: A System for Doing Mathematics by Computer ; Version 2.2 ; User's Guide for the X Front End. 1. ed., 2. printing. Wolfram Research, 1997.