Waltham, T. (2009). Foundations of engineering geology (3rd ed.). Spon Press.
Cita Chicago (17th ed.)Waltham, Tony. Foundations of Engineering Geology. 3rd ed. London: Spon Press, 2009.
Cita MLA (9th ed.)Waltham, Tony. Foundations of Engineering Geology. 3rd ed. Spon Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.