Stephen, D. (1969). Nature's wa7: A look at the web of life. McGraw-Hill Book.
芝加哥风格引文Stephen, David. Nature's Wa7: A Look at the Web of Life. New York : New York: McGraw-Hill Book, 1969.
MLA引文Stephen, David. Nature's Wa7: A Look at the Web of Life. McGraw-Hill Book, 1969.
警告:这些引文格式不一定是100%准确.