Barnes, J. (1987). Early Greek philosophy. Penguin books.
芝加哥风格引文Barnes, Jonathan. Early Greek Philosophy. New York: Penguin books, 1987.
MLA引文Barnes, Jonathan. Early Greek Philosophy. Penguin books, 1987.
警告:这些引文格式不一定是100%准确.
Barnes, J. (1987). Early Greek philosophy. Penguin books.
芝加哥风格引文Barnes, Jonathan. Early Greek Philosophy. New York: Penguin books, 1987.
MLA引文Barnes, Jonathan. Early Greek Philosophy. Penguin books, 1987.