(1994). Field Guide To The Birds Of North America. National Geographic society.
Chicagoスタイル(17版)引用形式Field Guide To The Birds Of North America. National Geographic society, 1994.
MLA(8版)引用形式Field Guide To The Birds Of North America. National Geographic society, 1994.
警告: この引用は必ずしも正確ではありません.