Posavac, E. J., & Carey, r. G. (1989). Program evaluation: Methods and case studies (3rd ed.). Prentice Hall.
芝加哥风格引文Posavac, Emil J., 与 raymond G. Carey. Program Evaluation: Methods and Case Studies. 3rd ed. Englewood Cliffs, NJ: Prentice Hall, 1989.
MLA引文Posavac, Emil J., 与 raymond G. Carey. Program Evaluation: Methods and Case Studies. 3rd ed. Prentice Hall, 1989.
警告：这些引文格式不一定是100％准确.