APA (7th ed.) Zitazioa
Geology, earthquake hazards, and land use in the Helena area, Montana.
Chicago Style (17th ed.) Zitazioa
Geology, Earthquake Hazards, and Land Use in the Helena Area, Montana.
MLA (9th ed.) Zitazioa
Geology, Earthquake Hazards, and Land Use in the Helena Area, Montana.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.