Gaya APA
Das, Braja M. (2014).
Principles of foundation engineering .
Singapore:
Cengage Learning.
Gaya Chicago
Das, Braja M.
Principles of foundation engineering.
Singapore:
Cengage Learning,
2014.
Text.
Gaya MLA
Das, Braja M.
Principles of foundation engineering.
Singapore:
Cengage Learning,
2014.
Text.
Gaya Turabian
Das, Braja M.
Principles of foundation engineering.
Singapore:
Cengage Learning,
2014.
Print.