RAMANUJAM, P. R. (2002). Distance open learning: Challenges to developing countries. Shipra publications.
芝加哥风格引文RAMANUJAM, P. Renga. Distance Open Learning: Challenges to Developing Countries. Shipra publications, 2002.
MLA引文RAMANUJAM, P. Renga. Distance Open Learning: Challenges to Developing Countries. Shipra publications, 2002.
警告：这些引文格式不一定是100％准确.