Gaya APA
Das, Braja M., Sivakugan, Nagaratnam. (2019).
Principles of Foundation Engineering (9th ed.).
USA:
Cengage Learning.
Gaya Chicago
Das, Braja M., Sivakugan, Nagaratnam.
Principles of Foundation Engineering.
9th ed.
USA:
Cengage Learning,
2019.
Text.
Gaya MLA
Das, Braja M., Sivakugan, Nagaratnam.
Principles of Foundation Engineering.
9th ed.
USA:
Cengage Learning,
2019.
Text.
Gaya Turabian
Das, Braja M., Sivakugan, Nagaratnam.
Principles of Foundation Engineering.
9th ed.
USA:
Cengage Learning,
2019.
Print.