Gaya APA

Brinkerhoff, R, O. et al (1986). Program Evaluation: A Practitioner's Guide for Trainers and Educators (Cetakan ke-4). Amerika: Kluwer- Nijhoff PUblishing.

Gaya MLA

Brinkerhoff, Robert, O.. et al. "Program Evaluation: A Practitioner's Guide for Trainers and Educators". Cetakan ke-4 Amerika: Kluwer- Nijhoff PUblishing, 1986. >