Cita APA (7th ed.)
Christensen, R. (2011). Plane answers to complex questions: The theory of linear models (4th ed.). Springer.
Cita Chicago (17th ed.)
Christensen, Ronald. Plane Answers to Complex Questions: The Theory of Linear Models. 4th ed. New York: Springer, 2011.
Cita MLA (9th ed.)
Christensen, Ronald. Plane Answers to Complex Questions: The Theory of Linear Models. 4th ed. Springer, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.