APA (7th ed.) Citation

Oak, P. N. (1973). Some missing chapters of world history ([1st ed.].). Itihas Shodh Sansthan.

Chicago Style (17th ed.) Citation

Oak, P. N. Some Missing Chapters of World History. [1st ed.]. New Delhi: Itihas Shodh Sansthan, 1973.

MLA (8th ed.) Citation

Oak, P. N. Some Missing Chapters of World History. [1st ed.]. Itihas Shodh Sansthan, 1973.