Não informado. (2014). U.S. Geological Survey Professional Paper. U.S. Geological Survey Professional Paper.
Citace podle Chicago (17th ed.)Não informado. U.S. Geological Survey Professional Paper. Washington: U.S. Geological Survey Professional Paper, 2014.
Citace podle MLA (8th ed.)Não informado. U.S. Geological Survey Professional Paper. U.S. Geological Survey Professional Paper, 2014.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..