APA (7th ed.) Citation

Matthews, M. S. (1990). Excel 2.1 made easy, IBM PC version. Osborne McGraw-Hill.

Chicago Style (17th ed.) Citation

Matthews, Martin S. Excel 2.1 Made Easy, IBM PC Version. Berkeley, Calif.: Osborne McGraw-Hill, 1990.

MLA (9th ed.) Citation

Matthews, Martin S. Excel 2.1 Made Easy, IBM PC Version. Osborne McGraw-Hill, 1990.