Gaya APA
Das, Braja M.. (2010).
Principles of Geotechnical Engineering (7th ed).
:
Cengage Learning.
Gaya Chicago
Das, Braja M..
Principles of Geotechnical Engineering.
7th ed
:
Cengage Learning,
2010.
Text.
Gaya MLA
Das, Braja M..
Principles of Geotechnical Engineering.
7th ed
:
Cengage Learning,
2010.
Text.
Gaya Turabian
Das, Braja M..
Principles of Geotechnical Engineering.
7th ed
:
Cengage Learning,
2010.
Print.