APA استشهاد

Smiley, J. (2001). Learn to program visual basic- databases. Firewall media.

استشهاد بنمط شيكاغو

Smiley, John. Learn to Program Visual Basic- Databases. New Delhi: Firewall media, 2001.

MLA استشهاد

Smiley, John. Learn to Program Visual Basic- Databases. Firewall media, 2001.