Lua APA (7ú heag.)
Lyell, C. (2001). The Student's elements of geology. Electric Book Co..
Lua i Stíl Chicago (17ú heag.)
Lyell, Charles. The Student's Elements of Geology. London: Electric Book Co., 2001.
Lua MLA (9ú heag.)
Lyell, Charles. The Student's Elements of Geology. Electric Book Co., 2001.
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