APA Citation

INGPEN, R. (1993). Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History. Dragon's World Ltd.

Chicago Style Citation

INGPEN, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History. Dragon's World Ltd, 1993.

MLA Citation

INGPEN, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History. Dragon's World Ltd, 1993.

Warning: These citations may not always be 100% accurate.