APA Citation

Ingpen, R. (1995). Encyclopedia of ideas that changed the world: The greatest discoverles and inventions of human history. A Dragon's World Book.

Chicago Style Citation

Ingpen, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoverles and Inventions of Human History. A Dragon's World Book, 1995.

MLA Citation

Ingpen, Robert. Encyclopedia of Ideas That Changed the World: The Greatest Discoverles and Inventions of Human History. A Dragon's World Book, 1995.

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