Smithsonian Institution & Simkin, T. (1981). Volcanoes of the world: A regional directory, gazetteer, and chronology of volcanism during the last 10,000 years. Hutchinson Ross Pub. Co. ; Distributed world wide by Academic Press.
Chicago Style (17th ed.) CitationSmithsonian Institution and Tom Simkin. Volcanoes of the World: A Regional Directory, Gazetteer, and Chronology of Volcanism During the Last 10,000 Years. Stroudsburg, Pa. : [New York]: Hutchinson Ross Pub. Co. ; Distributed world wide by Academic Press, 1981.
MLA (8th ed.) CitationSmithsonian Institution and Tom Simkin. Volcanoes of the World: A Regional Directory, Gazetteer, and Chronology of Volcanism During the Last 10,000 Years. Hutchinson Ross Pub. Co. ; Distributed world wide by Academic Press, 1981.