Gaya APA

Crandell, D, R. (1980). Recent Eruptive History of Mount Hood, Oregon, and Potential Hazards from Future Eruptions . Washington DC: U.S Government Printing Office.

Gaya MLA

Crandell, Dwight, R.. "Recent Eruptive History of Mount Hood, Oregon, and Potential Hazards from Future Eruptions". Washington DC: U.S Government Printing Office, 1980. Text.