Ehrhardt, V. P. (2011). Anthem critical thinking and writing skills: An introductory guide. Anthem Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEhrhardt, Victoria Pontzer. Anthem Critical Thinking and Writing Skills: An Introductory Guide. London ; New York: Anthem Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEhrhardt, Victoria Pontzer. Anthem Critical Thinking and Writing Skills: An Introductory Guide. Anthem Press, 2011.
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