United States. Immigration and Naturalization Service & United States. National Archives and Records Service. (1980). [Book indexes, Portland, Maine, passenger lists, 1907-1930]. National Archives and Records Service.
Chicago Style (17th ed.) CitationUnited States. Immigration and Naturalization Service and United States. National Archives and Records Service. [Book Indexes, Portland, Maine, Passenger Lists, 1907-1930]. Washington: National Archives and Records Service, 1980.
MLA (8th ed.) CitationUnited States. Immigration and Naturalization Service and United States. National Archives and Records Service. [Book Indexes, Portland, Maine, Passenger Lists, 1907-1930]. National Archives and Records Service, 1980.
Warning: These citations may not always be 100% accurate.