Gaya APA
Chellis, Robert D.. (1961).
Pile foundations (2nd ed).
New York:
McGraw-Hill.
Gaya Chicago
Chellis, Robert D..
Pile foundations.
2nd ed
New York:
McGraw-Hill,
1961.
Text.
Gaya MLA
Chellis, Robert D..
Pile foundations.
2nd ed
New York:
McGraw-Hill,
1961.
Text.
Gaya Turabian
Chellis, Robert D..
Pile foundations.
2nd ed
New York:
McGraw-Hill,
1961.
Print.