Cohen, D., Jeavons, P., & Živný, S. (2008). The expressive power of valued constraints: Hierarchies and collapses.
芝加哥风格引文Cohen, D., P. Jeavons, 与 S. Živný. The Expressive Power of Valued Constraints: Hierarchies and Collapses. 2008.
MLA引文Cohen, D., et al. The Expressive Power of Valued Constraints: Hierarchies and Collapses. 2008.
警告：这些引文格式不一定是100％准确.