Cita APA (7th ed.)
Lyell, C. (2001). The Student's elements of geology. Electric Book Co..
Cita Chicago (17th ed.)
Lyell, Charles. The Student's Elements of Geology. London: Electric Book Co., 2001.
Cita MLA (9th ed.)
Lyell, Charles. The Student's Elements of Geology. Electric Book Co., 2001.
Atenció: Aquestes cites poden no estar 100% correctes.