Gaya APA
Sain, Charles H.. (1968).
Earth Work .
:
McGraw Hill.
Gaya Chicago
Sain, Charles H..
Earth Work.
:
McGraw Hill,
1968.
Globe.
Gaya MLA
Sain, Charles H..
Earth Work.
:
McGraw Hill,
1968.
Globe.
Gaya Turabian
Sain, Charles H..
Earth Work.
:
McGraw Hill,
1968.
Globe.