Cofnodi Dyfyniadau
Dyfyniad APA
Siebert, L., Simkin, T., & Kimberly, P. (2010). Volcanoes of the world (3rd ed.). Smithsonian Institution.
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Dyfyniad Arddull Chicago
Siebert, Lee, Tom Simkin, and Paul Kimberly. Volcanoes of the World. 3rd ed. Washington, D.C. : Berkeley ; University of California Press: Smithsonian Institution, 2010.
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Dyfyniad MLA
Siebert, Lee, et al. Volcanoes of the World. 3rd ed. Smithsonian Institution, 2010.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.