Marckwardt, A. H. (1951). Introduction to the English language. [s.n..
Chicago Style (17th ed.) CitationMarckwardt, Albert H. Introduction to the English Language. New York: [s.n., 1951.
MLA引文Marckwardt, Albert H. Introduction to the English Language. [s.n., 1951.
警告:這些引文格式不一定是100%准確.