John Gerrard. (2003). Fundamentals of soils. Routledge.
Chicago Edition CitationJohn Gerrard. Fundamentals of Soils. London: Routledge, 2003.
Cita MLAJohn Gerrard. Fundamentals of Soils. Routledge, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.