Gaya APA

Posavac, E, J., Carey, R, G. (1985). Program evaluation: methods and case studies (2nd. Ed.). Englewood Cliffs, NJ.: Prentice-Hall.

Gaya MLA

Posavac, Emil, J.., Carey, Raymond, G.. "Program evaluation: methods and case studies". 2nd. Ed. Englewood Cliffs, NJ.: Prentice-Hall, 1985. Text.