Não informado. (1951). List of books accessioned and periodical articles indexed in the Columbus Memorial Library. Pan American Union.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. List of Books Accessioned and Periodical Articles Indexed in the Columbus Memorial Library. Washington: Pan American Union, 1951.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. List of Books Accessioned and Periodical Articles Indexed in the Columbus Memorial Library. Pan American Union, 1951.
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