Mathsoft, Inc. (1998). Mathcad 3.1: User's guide. MathSoft.
Chicago Style (17th ed.) CitationMathsoft, Inc. Mathcad 3.1: User's Guide. Cambridge, Mass., USA: MathSoft, 1998.
MLA (9th ed.) CitationMathsoft, Inc. Mathcad 3.1: User's Guide. MathSoft, 1998.
Warning: These citations may not always be 100% accurate.