Venugopal Reddy, V., & Manjulika, S. (2000). The World of open and distance learning. Viva Books.
芝加哥风格引文Venugopal Reddy, V., 与 S. Manjulika. The World of Open and Distance Learning. New Delhi: Viva Books, 2000.
MLA引文Venugopal Reddy, V., 与 S. Manjulika. The World of Open and Distance Learning. Viva Books, 2000.
警告：这些引文格式不一定是100％准确.