Citação norma APA

Ingpen, R., & Wilkinson, P. (1993). Encyclopedia of Ideas that Changed the World: The Greatest Discoveries and Inventions of Human History. Dragons World.

Citação norma Chicago

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

Citação norma MLA

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

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.