APA (7th ed.) Zitazioa
Das, B. M. (2002). Principles of geotechnical engineering (5th ed.). Thomson.
Chicago Style (17th ed.) Zitazioa
Das, Braja M. Principles of Geotechnical Engineering. 5th ed. Singapore: Thomson, 2002.
MLA (9th ed.) Zitazioa
Das, Braja M. Principles of Geotechnical Engineering. 5th ed. Thomson, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.