Gaya APA
Das, Braja M.. (2007).
Principles of foundation engineering / Braja M. Das (6th ed.).
:
Canada: Thomson.
Gaya Chicago
Das, Braja M..
Principles of foundation engineering / Braja M. Das.
6th ed.
:
Canada: Thomson,
2007.
Buku.
Gaya MLA
Das, Braja M..
Principles of foundation engineering / Braja M. Das.
6th ed.
:
Canada: Thomson,
2007.
Buku.
Gaya Turabian
Das, Braja M..
Principles of foundation engineering / Braja M. Das.
6th ed.
:
Canada: Thomson,
2007.
Buku.