APA (7th ed.) Citation

Williams, T. (2004). 251 Scientists of the world. Rohan Book Co.

Chicago Style (17th ed.) Citation

Williams, Timothy. 251 Scientists of the World. Delhi, India: Rohan Book Co, 2004.

MLA (9th ed.) Citation

Williams, Timothy. 251 Scientists of the World. Rohan Book Co, 2004.