APA (7th ed.) Zitazioa
Sing, A. (1987). Modern Geotechnical Engineering (3rd ed.). CBC Publishers.
Chicago Style (17th ed.) Zitazioa
Sing, Alam. Modern Geotechnical Engineering. 3rd ed. New Delhi: CBC Publishers, 1987.
MLA (9th ed.) Zitazioa
Sing, Alam. Modern Geotechnical Engineering. 3rd ed. CBC Publishers, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.