Catura-Houser, T., & O'Boyle, H. (2003). ExamInsight for A+ core hardware technology exam 220-221. TotalRecall Publications, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCatura-Houser, Tim, और Helen O'Boyle. ExamInsight for A+ Core Hardware Technology Exam 220-221. Friendswood, Tex.: TotalRecall Publications, Inc., 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCatura-Houser, Tim, और Helen O'Boyle. ExamInsight for A+ Core Hardware Technology Exam 220-221. TotalRecall Publications, Inc., 2003.
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