Gaya APA

KNODEL, K, ;, L, G, ;, J, V, H. (2007). Environmental Geology Handbook of Field Methods and Case Studies . : Springer Verlag Berlin Heidelberg.

Gaya MLA

KNODEL, Klaus, ;, LANGE,, Gerhard, ;, JURGEN, VOIGT,, Hans. "Environmental Geology Handbook of Field Methods and Case Studies". : Springer Verlag Berlin Heidelberg, 2007. Buku.