World Book (Chicago). (1989). The world book encyclopedia of science (Second 1989 printing.). World Book.
Style de citation Chicago (17e éd.)World Book (Chicago). The World Book Encyclopedia of Science. Second 1989 printing. Chicago: World Book, 1989.
Style de citation MLA (9e éd.)World Book (Chicago). The World Book Encyclopedia of Science. Second 1989 printing. World Book, 1989.
Attention : ces citations peuvent ne pas être correctes à 100%.