Παραπομπή APA

Freund, R., & Colton, R. R. (1993). Statistical methods. Academic Press.

Παραπομπή Chicago Style

Freund, Rudolf, και R Raymond Colton. Statistical Methods. New York: Academic Press, 1993.

Παραπομπή MLA

Freund, Rudolf, και R Raymond Colton. Statistical Methods. Academic Press, 1993.