Morris, H., & Gallacher, L. (2012). ITIL foundation exam study guide. Wiley.
芝加哥风格引文Morris, Helen, 与 Liz Gallacher. ITIL Foundation Exam Study Guide. Chichester, U.K.: Wiley, 2012.
MLA引文Morris, Helen, 与 Liz Gallacher. ITIL Foundation Exam Study Guide. Wiley, 2012.
警告：这些引文格式不一定是100％准确.