Gaya APA
Das, Braja M. (2004).
Principles of foundation engineering (Ed.5).
USA:
Thomson/West.
Gaya Chicago
Das, Braja M.
Principles of foundation engineering.
Ed.5
USA:
Thomson/West,
2004.
Text.
Gaya MLA
Das, Braja M.
Principles of foundation engineering.
Ed.5
USA:
Thomson/West,
2004.
Text.
Gaya Turabian
Das, Braja M.
Principles of foundation engineering.
Ed.5
USA:
Thomson/West,
2004.
Print.