O'Leary, T. j., & Gardner, D. C. (1996). WordPerfect 6.1 for Windows: The visual learning guide. Prima Pub., McGraw-Hill.
Chicagoスタイル(17版)引用形式O'Leary, Timothy j., , David C. Gardner. WordPerfect 6.1 for Windows: The Visual Learning Guide. Rocklin, CA : New York: Prima Pub., McGraw-Hill, 1996.
MLA(8版)引用形式O'Leary, Timothy j., , David C. Gardner. WordPerfect 6.1 for Windows: The Visual Learning Guide. Prima Pub., McGraw-Hill, 1996.
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