Παραπομπή σε μορφή APA (7η εκδ.)

Huitema, B. E. (2011). The analysis of covariance and alternatives: Statistical methods for experiments, quasi-experiments, and single-case studies (2nd ed.). Wiley. https://doi.org/10.1002/9781118067475

Παραπομπή σε μορφή Chicago (17η εκδ.)

Huitema, Bradley E. The Analysis of Covariance and Alternatives: Statistical Methods for Experiments, Quasi-experiments, and Single-case Studies. 2nd ed. Hoboken, N.J.: Wiley, 2011. https://doi.org/10.1002/9781118067475.

Παραπομπή σε μορφή MLA (8th εκδ.)

Huitema, Bradley E. The Analysis of Covariance and Alternatives: Statistical Methods for Experiments, Quasi-experiments, and Single-case Studies. 2nd ed. Wiley, 2011. https://doi.org/10.1002/9781118067475.