Cita APA (7th ed.)

(2003). Discover science almanac: The definitive science resource. Hyperion.

Cita Chicago (17th ed.)

Discover Science Almanac: The Definitive Science Resource. New York: Hyperion, 2003.

Cita MLA (9th ed.)

Discover Science Almanac: The Definitive Science Resource. Hyperion, 2003.