Παραπομπή APA

Zweig, F. M., & Marvin, K. E. (1981). Educating Policy Makers for evaluation. Sage.

Παραπομπή Chicago Style

Zweig, Franklin M., και Keith E. Marvin. Educating Policy Makers for Evaluation. Beverly Hills: Sage, 1981.

Παραπομπή MLA

Zweig, Franklin M., και Keith E. Marvin. Educating Policy Makers for Evaluation. Sage, 1981.