Wolfram Research (Firm). (1999). Mathematica 4 standard add-on packages: The official guide to over a thousand additional functions for use with Mathematica 4. Wolfram Media.
Chicago Style (17th ed.) CitationWolfram Research (Firm). Mathematica 4 Standard Add-on Packages: The Official Guide to over a Thousand Additional Functions for Use with Mathematica 4. Champaign, IL: Wolfram Media, 1999.
MLA (8th ed.) CitationWolfram Research (Firm). Mathematica 4 Standard Add-on Packages: The Official Guide to over a Thousand Additional Functions for Use with Mathematica 4. Wolfram Media, 1999.
Warning: These citations may not always be 100% accurate.