Grout, E. (1990). Easy access to WordPerfect: Release 4.2 incorporating versions 4.1 and 5.0. Pitman.
Chicago Style (17th ed.) CitationGrout, Eileen. Easy Access to WordPerfect: Release 4.2 Incorporating Versions 4.1 and 5.0. London: Pitman, 1990.
MLA (8th ed.) CitationGrout, Eileen. Easy Access to WordPerfect: Release 4.2 Incorporating Versions 4.1 and 5.0. Pitman, 1990.
Warning: These citations may not always be 100% accurate.