Παραπομπή APA

Craig, J. R., Vaughan, D. J., & Skinner, B. J. (2011). Earth resources and the environment (4th ed.). Prentice Hall.

Παραπομπή Chicago Style

Craig, James R., David J. Vaughan, και Brian J. Skinner. Earth Resources and the Environment. 4th ed. New Jersey: Prentice Hall, 2011.

Παραπομπή MLA

Craig, James R., et al. Earth Resources and the Environment. 4th ed. Prentice Hall, 2011.