Gaya APA

Principles of Foundation Engineering. (1999). California: PWS Publishing.

Gaya Chicago

Principles of Foundation Engineering. Ed.4. California: PWS Publishing, 1999. .

Gaya MLA

Principles of Foundation Engineering. Ed.4. California: PWS Publishing, 1999. .

Gaya Turabian

Principles of Foundation Engineering. California: PWS Publishing, 1999. .