Duchaufour, P. (1982). PEDOLOGY. Allen & Unwin / George Allen & Unwin.
Cita Chicago (17th ed.)Duchaufour, P. PEDOLOGY. London: Allen & Unwin / George Allen & Unwin, 1982.
Cita MLA (9th ed.)Duchaufour, P. PEDOLOGY. Allen & Unwin / George Allen & Unwin, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.