Grafen, A. (2007). The formal Darwinism project: A mid-term report.
芝加哥风格引文Grafen, A. The Formal Darwinism Project: A Mid-term Report. 2007.
MLA引文Grafen, A. The Formal Darwinism Project: A Mid-term Report. 2007.
警告：这些引文格式不一定是100％准确.
APA引文