Braja M. Das; Nagaratnam Sivakugan. (2018). Principles of Foundation Engineering, 9th Edition (ninth edition.). Cengage Learning.
Cita Chicago Style (17a ed.)Braja M. Das; Nagaratnam Sivakugan. Principles of Foundation Engineering, 9th Edition. ninth edition. United States of America: Cengage Learning, 2018.
Cita MLA (8a ed.)Braja M. Das; Nagaratnam Sivakugan. Principles of Foundation Engineering, 9th Edition. ninth edition. Cengage Learning, 2018.
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