APA-viite (7. p.)

Umila, B. V. Path analysis and the discrepancy evaluation model: An approach to program evaluation. Education quarterly..

Chicago-viite (17. p.)

Umila, Benwardo V. "Path Analysis and the Discrepancy Evaluation Model: An Approach to Program Evaluation." Education Quarterly. .

MLA-viite (9. p.)

Umila, Benwardo V. "Path Analysis and the Discrepancy Evaluation Model: An Approach to Program Evaluation." Education Quarterly., .