Gaya APA

Appelo, C, A, J., Postma, D. (2010). Geochemistry, Groundwater and Pollution second edition (Second Edition). Leiden: A. A. Balkema.

Gaya MLA

Appelo, C., A., J.., Postma, D.. "Geochemistry, Groundwater and Pollution second edition". Second Edition Leiden: A. A. Balkema, 2010. Text.