Phillips, J. J. (1991). Handbook of training evaluation and measurement methods (2nd ed.). Gulf Pub. Co.
Chicago-viite (17. p.)Phillips, Jack J. Handbook of Training Evaluation and Measurement Methods. 2nd ed. Houston: Gulf Pub. Co, 1991.
MLA-viite (8. p.)Phillips, Jack J. Handbook of Training Evaluation and Measurement Methods. 2nd ed. Gulf Pub. Co, 1991.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.