David, P. (2006). Article 31: The right to leisure, play and culture. Martinus Nijhoff Publishers.
芝加哥风格引文David, Paulo. Article 31: The Right to Leisure, Play and Culture. Leiden ; Boston: Martinus Nijhoff Publishers, 2006.
MLA引文David, Paulo. Article 31: The Right to Leisure, Play and Culture. Martinus Nijhoff Publishers, 2006.
警告：这些引文格式不一定是100％准确.