APA(7版)引用形式

Não informado. (2001). Statistical digest. U.S. Fish and Wildlife Service.

Chicagoスタイル(17版)引用形式

Não informado. Statistical Digest. Washington: U.S. Fish and Wildlife Service, 2001.

MLA(8版)引用形式

Não informado. Statistical Digest. U.S. Fish and Wildlife Service, 2001.

警告: この引用は必ずしも正確ではありません.