APA(7版)引用形式

Não informado. (1972). Environmental Geology Report. Bureau of Topographic and Geologic Survey.

Chicagoスタイル(17版)引用形式

Não informado. Environmental Geology Report. Harrisburg, Pa: Bureau of Topographic and Geologic Survey, 1972.

MLA(8版)引用形式

Não informado. Environmental Geology Report. Bureau of Topographic and Geologic Survey, 1972.

警告: この引用は必ずしも正確ではありません.