Acerson, K. L., & Lirola Terrez, A. (1991). WordPerfect 5.1: Manual de referencia. Osborne/McGraw-Hill.
Chicago Style (17th ed.) CitationAcerson, Karen L., and Antonio Lirola Terrez. WordPerfect 5.1: Manual De Referencia. Madrid: Osborne/McGraw-Hill, 1991.
MLA (9th ed.) CitationAcerson, Karen L., and Antonio Lirola Terrez. WordPerfect 5.1: Manual De Referencia. Osborne/McGraw-Hill, 1991.
Warning: These citations may not always be 100% accurate.