Lua APA (7ú heag.)
ebrary, Inc, Knödel, K., Lange, G., & Voigt, H. (2007). Environmental geology: Handbook of field methods and case studies. Springer.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, Klaus Knödel, Gerhard Lange, agus Hans-Jürgen Voigt. Environmental Geology: Handbook of Field Methods and Case Studies. Berlin ; New York: Springer, 2007.
Lua MLA (9ú heag.)
ebrary, Inc, et al. Environmental Geology: Handbook of Field Methods and Case Studies. Springer, 2007.
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