Gaya APA

Planer-Friedrich, B., Merkel, B, J. (2008). Groundwater Geochemistry second edition (Edisi Kedua). Berlin: Springer.

Gaya MLA

Planer-Friedrich, Britta., Merkel, Broder, J.. "Groundwater Geochemistry second edition". Edisi Kedua Berlin: Springer, 2008. Text.