Cita APA (7a ed.)

Mathsoft, Inc. (1995). A gentle introduction to S-Plus: Version 3.3 for Windows. StatSci Division, MathSoft, Inc.

Cita Chicago Style (17a ed.)

Mathsoft, Inc. A Gentle Introduction to S-Plus: Version 3.3 for Windows. Seattle, Wash.: StatSci Division, MathSoft, Inc, 1995.

Cita MLA (9a ed.)

Mathsoft, Inc. A Gentle Introduction to S-Plus: Version 3.3 for Windows. StatSci Division, MathSoft, Inc, 1995.