Παραπομπή APA

Christensen, R. (1996). Plane answers to complex questions: The theory of linear models.-2nded. (2nd ed.). Springer.

Παραπομπή Chicago Style

Christensen, Ronald. Plane Answers to Complex Questions: The Theory of Linear Models.-2nded. 2nd ed. New York: Springer, 1996.

Παραπομπή MLA

Christensen, Ronald. Plane Answers to Complex Questions: The Theory of Linear Models.-2nded. 2nd ed. Springer, 1996.