ebrary, Inc, Petty, D., & MacFarland, C. (2012). Citizenship: Practices, types and challenges. Nova Science Publishers.
芝加哥风格引文ebrary, Inc, Dexter Petty, 与 Clay MacFarland. Citizenship: Practices, Types and Challenges. Hauppauge, NY: Nova Science Publishers, 2012.
MLA引文ebrary, Inc, et al. Citizenship: Practices, Types and Challenges. Nova Science Publishers, 2012.
警告：这些引文格式不一定是100％准确.