एपीए उद्धरण

Das, B. M. (1997). Principles of geotechnical engineering (4.). International Thomson Publishing company.

शिकागो स्टाइल उद्धरण

Das, Braja M. Principles of Geotechnical Engineering. 4. Boston: International Thomson Publishing company, 1997.

एमएलए उद्धरण

Das, Braja M. Principles of Geotechnical Engineering. 4. International Thomson Publishing company, 1997.