Acerson, Karen L. WordPerfect 5.1 the complete reference Karen L. Acerson. - New York Osborne McGraw-Hill c1990. - xlii, 1327 p. ill. Includes index. ISBN: 0078816343 LCCN: 88132795 Subjects--Uniform Titles: WordPerfect Computer program Subjects--Topical Terms: Word processing LC Class. No.: Z52.5.W65 / A26 1988 Dewey Class. No.: 652/5