APA (7 वां संस्करण) प्रशस्ति पत्र
Paul, R., & Elder, L. (2006). Critical thinking: Tools for taking charge of your learning and your life (2nd ed.). Pearson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Paul, Richard, और Linda Elder. Critical Thinking: Tools for Taking Charge of Your Learning and Your Life. 2nd ed. Upper Saddle River, New Jersey: Pearson, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Paul, Richard, और Linda Elder. Critical Thinking: Tools for Taking Charge of Your Learning and Your Life. 2nd ed. Pearson, 2006.
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