Não informado. (1928). Monthly list books catalogued in the Library of the United nations. United Nations Library.
Chicago-Zitierstil (17. Ausg.)Não informado. Monthly List Books Catalogued in the Library of the United Nations. Geneve, Suíça: United Nations Library, 1928.
MLA-Zitierstil (8. Ausg.)Não informado. Monthly List Books Catalogued in the Library of the United Nations. United Nations Library, 1928.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.