MLA

Bucher, Kurt, and Rodney Grapes. Petrogenesis of Metamorphic Rocks. Springer Berlin Heidelberg, 2011.

APA

Bucher, K., & Grapes, R. (2011). Petrogenesis of Metamorphic Rocks. Springer Berlin Heidelberg.

Chicago

Bucher, Kurt, and Rodney Grapes. Petrogenesis of Metamorphic Rocks. : Springer Berlin Heidelberg, 2011.