Não informado. (2001). Special paper. Department of Natural Resources.
Chicagoスタイル(17版)引用形式Não informado. Special Paper. Québec, Canadá: Department of Natural Resources, 2001.
MLA(8版)引用形式Não informado. Special Paper. Department of Natural Resources, 2001.
警告: この引用は必ずしも正確ではありません.