Illinois Natural History Survey. (2001). Biological notes. Natural History Survey Division.
Chicagoスタイル(17版)引用形式Illinois Natural History Survey. Biological Notes. Urbana, Ill: Natural History Survey Division, 2001.
MLA(8版)引用形式Illinois Natural History Survey. Biological Notes. Natural History Survey Division, 2001.
警告: この引用は必ずしも正確ではありません.