Bracewell, R. N. (1975). The Galactic Club: Intelligent life in outer space. W. H. Freeman : distributed by Scribner, New York.
芝加哥风格引文Bracewell, Ronald Newbold. The Galactic Club: Intelligent Life in Outer Space. San Francisco: W. H. Freeman : distributed by Scribner, New York, 1975.
MLA引文Bracewell, Ronald Newbold. The Galactic Club: Intelligent Life in Outer Space. W. H. Freeman : distributed by Scribner, New York, 1975.
警告：这些引文格式不一定是100％准确.