Gemmell, D. (1989). The last guardian: The stones of power. Del Rey Books.
芝加哥风格引文Gemmell, David. The Last Guardian: The Stones of Power. New York: Del Rey Books, 1989.
MLA引文Gemmell, David. The Last Guardian: The Stones of Power. Del Rey Books, 1989.
警告：这些引文格式不一定是100％准确.