Gaya APA

P.E., R, M, K, P. (1985). Construction and Geotechnical Methods in Foundation Engineering . Singapore: MCGRAW-HILL BOOK COMPANY.

Gaya MLA

P.E., Robert, M., Koerner,, Ph.D.,. "Construction and Geotechnical Methods in Foundation Engineering". Singapore: MCGRAW-HILL BOOK COMPANY, 1985. Text.