Grolier Incorporated. (2003). The Encyclopedia Americana. Grolier Inc.
Cita Chicago (17th ed.)Grolier Incorporated. The Encyclopedia Americana. Danbury, Conn: Grolier Inc, 2003.
Cita MLA (9th ed.)Grolier Incorporated. The Encyclopedia Americana. Grolier Inc, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.