Lua APA (7ú heag.)
Fletcher, C. J. N. (2016). Geology for Ground Engineering Projects: Chris J. N. Fletcher. CRC Press.
Lua i Stíl Chicago (17ú heag.)
Fletcher, Chris J. N. Geology for Ground Engineering Projects: Chris J. N. Fletcher. New York: CRC Press, 2016.
Lua MLA (9ú heag.)
Fletcher, Chris J. N. Geology for Ground Engineering Projects: Chris J. N. Fletcher. CRC Press, 2016.
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