Não informado. (1951). List of books accessioned and periodical articles indexed in the Columbus Memorial Library. Pan American Union.
Chicago-referens (17:e uppl.)Não informado. List of Books Accessioned and Periodical Articles Indexed in the Columbus Memorial Library. Washington: Pan American Union, 1951.
MLA-referens (8:e uppl.)Não informado. List of Books Accessioned and Periodical Articles Indexed in the Columbus Memorial Library. Pan American Union, 1951.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.