APA
Das B. M., . (2007). Principles of foundation engineering. Australia: Cengage Learning.
Chicago
Das Braja M, . 2007. Principles of foundation engineering. Australia: Cengage Learning.
Harvard
Das B. M., . (2007). Principles of foundation engineering. Australia: Cengage Learning.
MLA
Das Braja M, . Principles of foundation engineering. Australia: Cengage Learning. 2007.