Mincberg, Mella. WordPerfect 5.1 : made easy / Mella Mincberg. - Berkeley, Calif. : Osborne McGraw-Hill, c1990. - xxviii, 1071 p. : ill. ISBN: 0078816254 LCCN: 92033233 Subjects--Uniform Titles: WordPerfect (Computer programme). Subjects--Topical Terms: Word processing.