APA استشهاد

Bates, R. J., & Gregory , D. W. (2007). Voice and data communications handbook (5th ed.). Tata McGraw-Hill Pub. Co. Ltd..

استشهاد بنمط شيكاغو

Bates, Regis J., و Donald W. Gregory. Voice and Data Communications Handbook. 5th ed. New Delhi: Tata McGraw-Hill Pub. Co. Ltd., 2007.

MLA استشهاد

Bates, Regis J., و Donald W. Gregory. Voice and Data Communications Handbook. 5th ed. Tata McGraw-Hill Pub. Co. Ltd., 2007.