Não informado. (1928). Monthly list books catalogued in the Library of the United nations. United Nations Library.
Chicagoスタイル(17版)引用形式Não informado. Monthly List Books Catalogued in the Library of the United Nations. Geneve, Suíça: United Nations Library, 1928.
MLA(8版)引用形式Não informado. Monthly List Books Catalogued in the Library of the United Nations. United Nations Library, 1928.
警告: この引用は必ずしも正確ではありません.