Dyfyniad APA

Tripodi, T., Fellin, P., & Epstein, I. (1978). Differential social program evaluation. F. E. Peacock Publishers.

Dyfyniad Arddull Chicago

Tripodi, Tony, Phillip Fellin, and Irwin Epstein. Differential Social Program Evaluation. Itasca, Ill.: F. E. Peacock Publishers, 1978.

Dyfyniad MLA

Tripodi, Tony, et al. Differential Social Program Evaluation. F. E. Peacock Publishers, 1978.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.