Crawford, H. E. W. (2004). Sumer and the Sumerians (2nd ed.). Cambridge University Press.
Chicago Style (17th ed.) CitationCrawford, Harriet E. W. Sumer and the Sumerians. 2nd ed. Cambridge [u.a.]: Cambridge University Press, 2004.
MLA引文Crawford, Harriet E. W. Sumer and the Sumerians. 2nd ed. Cambridge University Press, 2004.
警告:這些引文格式不一定是100%准確.