Gaya APA

Using Application Software In Business : Using the IBM PC VP-Planner Plus dBASE III PLUS WordPerfect 4.2. (1990). USA: mc graw hill.

Gaya MLA

Using Application Software In Business : Using the IBM PC VP-Planner Plus dBASE III PLUS WordPerfect 4.2. . USA: mc graw hill, 1990. Text.