Ford, D., & Williams, P. (2007). Karst hydrogeology and geomorphology. John Wiley.
Čikaški stil citiranjaFord, Derek, i Paul Williams. Karst Hydrogeology and Geomorphology. Chichester: John Wiley, 2007.
MLA način citiranjaFord, Derek, i Paul Williams. Karst Hydrogeology and Geomorphology. John Wiley, 2007.
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