Craig, J. R., Vaughan, D. J., & Skinner, B. J. (1996). Resources of the earth (2nd ed.). Prentice Hall.
Cita Chicago Style (17a ed.)Craig, James R., David J. Vaughan, y Brian J. Skinner. Resources of the Earth. 2nd ed. Upper Saddle River, New Jersey: Prentice Hall, 1996.
Cita MLA (9a ed.)Craig, James R., et al. Resources of the Earth. 2nd ed. Prentice Hall, 1996.
Precaución: Estas citas no son 100% exactas.