Cita APA (7th ed.)

Gartrell, J. E., Crowder, J., & Callister, J. C. (1992). Earth: The water planet (Rev. ed.). National Science Teachers Association.

Cita Chicago (17th ed.)

Gartrell, Jack E., Jane Crowder, i Jeffrey C. Callister. Earth: The Water Planet. Rev. ed. Arlington, Va.: National Science Teachers Association, 1992.

Cita MLA (8th ed.)

Gartrell, Jack E., et al. Earth: The Water Planet. Rev. ed. National Science Teachers Association, 1992.