Walther, J. V. (2009). Essentials of geochemistry (2nd ed.). Jones & Bartlett Publishers.

Walther, John V. Essentials of Geochemistry. 2nd ed. Sudbury, Mass: Jones & Bartlett Publishers, 2009.

Walther, John V. Essentials of Geochemistry. 2nd ed. Jones & Bartlett Publishers, 2009.