Blanc, I., & Vento, C. (1992). Learning Lotus 1-2-3 for IBM & compatibles: For versions 2.3, 2.4 & 3.1 : step-by-step concepts, exercises, keystrokes & applications. Dictation Disc Company.
Chicago Style (17th ed.) CitationBlanc, Iris, and Cathy Vento. Learning Lotus 1-2-3 for IBM & Compatibles: For Versions 2.3, 2.4 & 3.1 : Step-by-step Concepts, Exercises, Keystrokes & Applications. New York: Dictation Disc Company, 1992.
MLA (9th ed.) CitationBlanc, Iris, and Cathy Vento. Learning Lotus 1-2-3 for IBM & Compatibles: For Versions 2.3, 2.4 & 3.1 : Step-by-step Concepts, Exercises, Keystrokes & Applications. Dictation Disc Company, 1992.
Warning: These citations may not always be 100% accurate.