Não informado. (2022). The Pan American Book Shelf. Pan American Union, Columbus Memorial Library.
Chicago-referens (17:e uppl.)Não informado. The Pan American Book Shelf. Washington: Pan American Union, Columbus Memorial Library, 2022.
MLA-referens (8:e uppl.)Não informado. The Pan American Book Shelf. Pan American Union, Columbus Memorial Library, 2022.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.