Rao, D. B. (1997). Education for the 21st Century. Discovery Publishing.
芝加哥风格引文Rao, Digumarti Bhaskara. Education for the 21st Century. New Delhi: Discovery Publishing, 1997.
MLA引文Rao, Digumarti Bhaskara. Education for the 21st Century. Discovery Publishing, 1997.
警告：这些引文格式不一定是100％准确.