PC, I. Statpro: The statistics and graphic database workstation. Wadsworth Professional Softwar.
Chicago Style (17th ed.) CitationPC, IBM. Statpro: The Statistics and Graphic Database Workstation. Wadsworth Professional Softwar.
MLA (8th ed.) CitationPC, IBM. Statpro: The Statistics and Graphic Database Workstation. Wadsworth Professional Softwar.
Warning: These citations may not always be 100% accurate.