Avila, H. B. (2007). Theory of legal principles. Springer.
芝加哥风格引文Avila, Humberto Bergmann. Theory of Legal Principles. Dordrecht: Springer, 2007.
MLA引文Avila, Humberto Bergmann. Theory of Legal Principles. Springer, 2007.
警告：这些引文格式不一定是100％准确.
APA引文