Gaya APA

POULOS, H, G., DAVIS, E, H. (1980). PILE FOUNDATION ANALYSIS AND DESIGN . CANADA: John Wiley and Sons.

Gaya MLA

POULOS, H., G.., DAVIS, E., H.. "PILE FOUNDATION ANALYSIS AND DESIGN". CANADA: John Wiley and Sons, 1980. Text Book Sipil.