Tohutoro APA (7th ed.)
Pile foundation / Chellis, Robert D: McGraw Hill Book 2nd ed (2nd ed.).
Tohutoru Kātū Chicago (17th ed.)
Pile Foundation / Chellis, Robert D: McGraw Hill Book 2nd Ed. 2nd ed.
Tohutoro MLA (9th ed.)
Pile Foundation / Chellis, Robert D: McGraw Hill Book 2nd Ed. 2nd ed.
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