Douglas, F., & Baker, H. (1982). Narrative of the life of Frederick Douglas an American slave. Penguin bks..
芝加哥风格引文Douglas, Frederick, 与 Houston.A Baker. Narrative of the Life of Frederick Douglas an American Slave. New York: Penguin bks., 1982.
MLA引文Douglas, Frederick, 与 Houston.A Baker. Narrative of the Life of Frederick Douglas an American Slave. Penguin bks., 1982.
警告：这些引文格式不一定是100％准确.