Iversen, G. R., & Norpoth, H. (1987). Analysis of variance (2nd ed.). Sage Publications.
Cita Chicago (17th ed.)Iversen, Gudmund R., i Helmut Norpoth. Analysis of Variance. 2nd ed. Newbury Park: Sage Publications, 1987.
Cita MLA (9th ed.)Iversen, Gudmund R., i Helmut Norpoth. Analysis of Variance. 2nd ed. Sage Publications, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.