Craig, J. R., Vaughan, D. J., & Skinner, B. J. (2014). Earth resources and the environment (Fourth, Pearson new international edition.). Pearson.
Cita Chicago Style (17a ed.)Craig, James R., David J. Vaughan, y Brian J. Skinner. Earth Resources and the Environment. Fourth, Pearson new international edition. Harlow, Essex, England: Pearson, 2014.
Cita MLA (8a ed.)Craig, James R., et al. Earth Resources and the Environment. Fourth, Pearson new international edition. Pearson, 2014.
Precaución: Estas citas no son 100% exactas.