Cita APA (7a ed.)

(2005). Prentice Hall earth science. Pearson Prentice Hall.

Cita Chicago Style (17a ed.)

Prentice Hall Earth Science. Boston: Pearson Prentice Hall, 2005.

Cita MLA (8a ed.)

Prentice Hall Earth Science. Pearson Prentice Hall, 2005.