Civilian Conservation Corps (U.S.). Company 1640. Twin Hill billy. Company 1640.
Chicagoスタイル(17版)引用形式Civilian Conservation Corps (U.S.). Company 1640. Twin Hill Billy. Port Angeles, Wash.: Company 1640.
MLA(8版)引用形式Civilian Conservation Corps (U.S.). Company 1640. Twin Hill Billy. Company 1640.
警告: この引用は必ずしも正確ではありません.