menzies, G. 1421: The year china discovered america. Perrenial.
Chicago Style (17th ed.) Citationmenzies, Gavin. 1421: The Year China Discovered America. New York: Perrenial.
MLA引文menzies, Gavin. 1421: The Year China Discovered America. Perrenial.
警告：這些引文格式不一定是100％准確.