APA (7th ed.) Zitazioa
Kramer, S. L. (1996). Geotechnical earthquake engineering. Prentice Hall.
Chicago Style (17th ed.) Zitazioa
Kramer, Steven Lawrence. Geotechnical Earthquake Engineering. Upper Saddle River, N.J.: Prentice Hall, 1996.
MLA (9th ed.) Zitazioa
Kramer, Steven Lawrence. Geotechnical Earthquake Engineering. Prentice Hall, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.