Gaya APA
Day, R, W. (2010).
(E-Book Teknik Sipil) FOUNDATION ENGINEERING HANDBOOK (-).
New York:
McGraw-Hill Book Company.
Gaya MLA
Day, Robert, W..
"(E-Book Teknik Sipil) FOUNDATION ENGINEERING HANDBOOK".
-
New York:
McGraw-Hill Book Company,
2010.
Computer File.