APA引文

Venugopal Reddy, V., & Manjulika, S. (2000). The World of open and distance learning. Viva Books.

Chicago Style (17th ed.) Citation

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

MLA引文

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