United States. National Park Service. (1922). Report of Director of National Park Service to Secretary of Interior for fiscal year ended June 30, 1923 and travel season, 1923. GPO.
Chicago Style (17th ed.) CitationUnited States. National Park Service. Report of Director of National Park Service to Secretary of Interior for Fiscal Year Ended June 30, 1923 and Travel Season, 1923. [Washington]: GPO, 1922.
MLA (9th ed.) CitationUnited States. National Park Service. Report of Director of National Park Service to Secretary of Interior for Fiscal Year Ended June 30, 1923 and Travel Season, 1923. GPO, 1922.
Warning: These citations may not always be 100% accurate.