Thompson, G. R., & Turk, J. (2007). Earth science and the environment (Fourth edition.). Thomson Brooks/Cole.
Cita Chicago (17th ed.)Thompson, Graham R., i Jonathan Turk. Earth Science and the Environment. Fourth edition. Belmont, California: Thomson Brooks/Cole, 2007.
Cita MLA (9th ed.)Thompson, Graham R., i Jonathan Turk. Earth Science and the Environment. Fourth edition. Thomson Brooks/Cole, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.