APA استشهاد

Reddy, V. V., & Manjulika, S. (2000). world of open and distance learning. Viva Books Private Limited.

استشهاد بنمط شيكاغو

Reddy, V. Venugopal, و S. Manjulika. World of Open and Distance Learning. New Delhi: Viva Books Private Limited, 2000.

MLA استشهاد

Reddy, V. Venugopal, و S. Manjulika. World of Open and Distance Learning. Viva Books Private Limited, 2000.