(1939). Information concerning the United States Department of the Interior: U. S. Dep. of the Interior. Assembled in question and answer form for ready reference.
Chicago-Zitierstil (17. Ausg.)Information Concerning the United States Department of the Interior: U. S. Dep. of the Interior. Assembled in Question and Answer Form for Ready Reference. Washington, 1939.
MLA-Zitierstil (9. Ausg.)Information Concerning the United States Department of the Interior: U. S. Dep. of the Interior. Assembled in Question and Answer Form for Ready Reference. 1939.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.