Cita APA (7th ed.)

Freund, R. J., & Wilson, W. J. (2003). Statistical methods (2a. ed.). Academic Press.

Cita Chicago (17th ed.)

Freund, Rudolf J., i William J. Wilson. Statistical Methods. 2a. ed. San Diego: Academic Press, 2003.

Cita MLA (9th ed.)

Freund, Rudolf J., i William J. Wilson. Statistical Methods. 2a. ed. Academic Press, 2003.