Gaya APA
, ., Das, B, M. (2013).
Fundamentals of Geotechnical Engineering, 4th edition .
Cengage Learning, 2013:
Cengage Learning, 2013.
Gaya MLA
, ., Das, Braja, M..
"Fundamentals of Geotechnical Engineering, 4th edition".
Cengage Learning, 2013:
Cengage Learning, 2013,
2013.
.