Gaya APA
Brinkerhoff, R, O. et al (1983).
Program Evaluation: A Practitioner’s Guide for Trainers and Educators .
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Springer Netherland.
Gaya MLA
Brinkerhoff, Robert, O.. et al.
"Program Evaluation: A Practitioner’s Guide for Trainers and Educators".
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Springer Netherland,
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Book.