APA Style

Wilkinson, Philip, Ingpen, Robert. (1993). Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History . Limpsfield: Dragons World Ltd..

Chicago Style

Wilkinson, Philip, Ingpen, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History. Limpsfield: Dragons World Ltd., 1993. Text.

MLA Style

Wilkinson, Philip, Ingpen, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History. Limpsfield: Dragons World Ltd., 1993. Text.

Turabian Style

Wilkinson, Philip, Ingpen, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoveries and Inventions of Human History. Limpsfield: Dragons World Ltd., 1993. Print.