Não informado. (2014). Geological Survey Professional Paper. U.S. Geological Survey Professional Paper.
Chicagoスタイル(17版)引用形式Não informado. Geological Survey Professional Paper. Washington: U.S. Geological Survey Professional Paper, 2014.
MLA(8版)引用形式Não informado. Geological Survey Professional Paper. U.S. Geological Survey Professional Paper, 2014.
警告: この引用は必ずしも正確ではありません.