(1970). Eight decades of progress. s.n..
Chicago Style (17th ed.) CitationEight Decades of Progress. [S.l.: s.n., 1970.
MLA引文Eight Decades of Progress. s.n., 1970.
警告:這些引文格式不一定是100%准確.
(1970). Eight decades of progress. s.n..
Chicago Style (17th ed.) CitationEight Decades of Progress. [S.l.: s.n., 1970.
MLA引文Eight Decades of Progress. s.n., 1970.