M., K., R., Levitt, R., E.(1985).Construction and geotechnical methods in foundation engineering / Robert M. Koener; Editor: Raymond E. Levitt (Ed.International).New York:McGraw-Hill book company.
Gaya MLA
Koerner, Robert, M.., Raymond, E., Levitt."Construction and geotechnical methods in foundation engineering / Robert M. Koener; Editor: Raymond E. Levitt".Ed.InternationalNew York:McGraw-Hill book company,1985.Textbook.