Nelson, B. M. W. (1928). State recreation: Parks, forests and game preserves. National conference on State parks, Inc..
Chicagoスタイル(17版)引用形式Nelson, Beatrice M. Ward. State Recreation: Parks, Forests and Game Preserves. Washington, D.C.: National conference on State parks, Inc., 1928.
MLA(8版)引用形式Nelson, Beatrice M. Ward. State Recreation: Parks, Forests and Game Preserves. National conference on State parks, Inc., 1928.
警告: この引用は必ずしも正確ではありません.