Gaya APA
Valls, J.. (1980).
The Asian information Centre for geotechnical engineering operation, services and experience .
:
ARRB.
Gaya Chicago
Valls, J..
The Asian information Centre for geotechnical engineering operation, services and experience.
:
ARRB,
1980.
Computer Software.
Gaya MLA
Valls, J..
The Asian information Centre for geotechnical engineering operation, services and experience.
:
ARRB,
1980.
Computer Software.
Gaya Turabian
Valls, J..
The Asian information Centre for geotechnical engineering operation, services and experience.
:
ARRB,
1980.
Computer Software.