Cita APA (7th ed.)

Kluge, S. (2009). Encounter earth: Interactive geoscience explorations. Pearson education.

Cita Chicago (17th ed.)

Kluge, Steven. Encounter Earth: Interactive Geoscience Explorations. Upper Saddle River, NJ: Pearson education, 2009.

Cita MLA (9th ed.)

Kluge, Steven. Encounter Earth: Interactive Geoscience Explorations. Pearson education, 2009.