Campbell, Mary V. Teach yourself WordPerfect 5.1 / Mary Campbell. - Berkeley, Calif. : Osborne McGraw-Hill, c1990. - xxxiii, 1041 p. : ill. ; 23 cm. Includes index. ISBN: 0078816661 (pbk.) Subjects--Uniform Titles: WordPerfect (Computer file). Subjects--Topical Terms: Word processing.