Gaya APA

Bailey, R, A. (1983). The Vulcano Hazards Program : Objectives and Long - Range Plans . : United States Departments of the Interior Geologicl Survey.

Gaya MLA

Bailey, R, A. "The Vulcano Hazards Program : Objectives and Long - Range Plans". : United States Departments of the Interior Geologicl Survey, 1983. Text.