SIMPSON, A. (1993). Menguasai WordPerfect 5.1. Elex Media Komputindo.
Chicago Style (17th ed.) CitationSIMPSON, Alan. Menguasai WordPerfect 5.1. Elex Media Komputindo, 1993.
MLA (8th ed.) CitationSIMPSON, Alan. Menguasai WordPerfect 5.1. Elex Media Komputindo, 1993.
Warning: These citations may not always be 100% accurate.