Woodward, R. J., & Gardner, S. W. G. (1972). Drilled Pier Foundations. McGraw-Hill.
Čikaški stil citiranjaWoodward, Richard J., i S. William Greer Gardner. Drilled Pier Foundations. New York: McGraw-Hill, 1972.
MLA način citiranjaWoodward, Richard J., i S. William Greer Gardner. Drilled Pier Foundations. McGraw-Hill, 1972.
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