Gerson, R. F. (1998). Beyond customer service, revised (Rev. ed.). Crisp Publications.
芝加哥风格引文Gerson, Richard F. Beyond Customer Service, Revised. Rev. ed. Menlo Park, Calif.: Crisp Publications, 1998.
MLA引文Gerson, Richard F. Beyond Customer Service, Revised. Rev. ed. Crisp Publications, 1998.
警告：这些引文格式不一定是100％准确.