APA (7th ed.) Citation

(1987). Computing introduction: Practical work guide dBase III. Trust publication.

Chicago Style (17th ed.) Citation

Computing Introduction: Practical Work Guide DBase III. [Perth, W.A.]?: Trust publication, 1987.

MLA (9th ed.) Citation

Computing Introduction: Practical Work Guide DBase III. Trust publication, 1987.

Warning: These citations may not always be 100% accurate.