APA (7th ed.) Citation

Clark, R. E. (1983). Executive Visicalc for the Apple computer. Addison-Wesley.

Chicago Style (17th ed.) Citation

Clark, Roger E. Executive Visicalc for the Apple Computer. Reading, Mass: Addison-Wesley, 1983.

MLA (9th ed.) Citation

Clark, Roger E. Executive Visicalc for the Apple Computer. Addison-Wesley, 1983.