Maps.com (Firm) & ebrary, Inc. (2000). Possible migration routes of the first Americans. Maps.com.
Chicagoスタイル(17版)引用形式Maps.com (Firm) , Inc ebrary. Possible Migration Routes of the First Americans. [S.l.]: Maps.com, 2000.
MLA(9版)引用形式Maps.com (Firm) , Inc ebrary. Possible Migration Routes of the First Americans. Maps.com, 2000.
警告: この引用は必ずしも正確ではありません.