Lyell, C. (1837). Principles of geology: Being an inquiry how far the former changes of the earth's surface are referable to causes now in operation (1st American from the 5th and last London ed.). J. Kay, jun. & brother; J.I. Kay & Co..
Citace podle Chicago (17th ed.)Lyell, Charles. Principles of Geology: Being an Inquiry How Far the Former Changes of the Earth's Surface Are Referable to Causes Now in Operation. 1st American from the 5th and last London ed. Philadelphia, Pittsburg: J. Kay, jun. & brother; J.I. Kay & Co., 1837.
Citace podle MLA (8th ed.)Lyell, Charles. Principles of Geology: Being an Inquiry How Far the Former Changes of the Earth's Surface Are Referable to Causes Now in Operation. 1st American from the 5th and last London ed. J. Kay, jun. & brother; J.I. Kay & Co., 1837.