Marr, W. A. (2003). A history of progress: Selected US papers in Geotechnical Engineering. American Society of Civil Engineers.
Cita Chicago (17th ed.)Marr, W. Allen. A History of Progress: Selected US Papers in Geotechnical Engineering. American Society of Civil Engineers, 2003.
Cita MLA (9th ed.)Marr, W. Allen. A History of Progress: Selected US Papers in Geotechnical Engineering. American Society of Civil Engineers, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.