Παραπομπή APA

Ball, D. (1998). Official powerbuilder 6: Advanced tools for the enterprise. - 2nd ed. , (2nd ed. ,.). Comdex computer publishing.

Παραπομπή Chicago Style

Ball, Derek. Official Powerbuilder 6: Advanced Tools for the Enterprise. - 2nd Ed. ,. 2nd ed. ,. New Delhi: Comdex computer publishing, 1998.

Παραπομπή MLA

Ball, Derek. Official Powerbuilder 6: Advanced Tools for the Enterprise. - 2nd Ed. ,. 2nd ed. ,. Comdex computer publishing, 1998.