APA (7 वां संस्करण) प्रशस्ति पत्र
Christensen, R. (2011). Plane answers to complex questions: The theory of linear models (4th ed.). Springer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Christensen, Ronald. Plane Answers to Complex Questions: The Theory of Linear Models. 4th ed. New York: Springer, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Christensen, Ronald. Plane Answers to Complex Questions: The Theory of Linear Models. 4th ed. Springer, 2011.
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