Worster, D. (1994). Under western skies: Nature and history in the American West. Oxford University Press.
Chicago Style (17th ed.) CitationWorster, Donald. Under Western Skies: Nature and History in the American West. New York: Oxford University Press, 1994.
MLA引文Worster, Donald. Under Western Skies: Nature and History in the American West. Oxford University Press, 1994.
警告：這些引文格式不一定是100％准確.