American Historical Research Collection. (1973). Classified listing of books, government documents, pamphlets, periodicals, serials, etc. s.n.].
芝加哥风格引文American Historical Research Collection. Classified Listing of Books, Government Documents, Pamphlets, Periodicals, Serials, Etc. [Manilan: s.n.], 1973.
MLA引文American Historical Research Collection. Classified Listing of Books, Government Documents, Pamphlets, Periodicals, Serials, Etc. s.n.], 1973.
警告：这些引文格式不一定是100％准确.