Cita APA

National Geographic Society. (2002). McGraw-Hill science. New York: McGraw-Hill.

Chicago Style Citation

National Geographic Society. McGraw-Hill Science. New York: McGraw-Hill, 2002.

Cita MLA

National Geographic Society. McGraw-Hill Science. New York: McGraw-Hill, 2002.

Atenció: Aquestes cites poden no estar 100% correctes.