APA (7th ed.) Zitazioa

Waltham, T. (1994). Foundations of engineering geology. Spon Pr..

Chicago Style (17th ed.) Zitazioa

Waltham, Tony. Foundations of Engineering Geology. London: Spon Pr., 1994.

MLA (9th ed.) Zitazioa

Waltham, Tony. Foundations of Engineering Geology. Spon Pr., 1994.