Woodward, R. J., & Gardner, S. W. G. (1972). Drilled Pier Foundations. McGraw-Hill.
Chicago Edition CitationWoodward, Richard J., i S. William Greer Gardner. Drilled Pier Foundations. New York: McGraw-Hill, 1972.
Cita MLAWoodward, Richard J., i S. William Greer Gardner. Drilled Pier Foundations. McGraw-Hill, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.