COHEN, M. R. d. (1980). The skills of professional evaluation. University Park Press.
芝加哥风格引文COHEN, Mikal R dkk. The Skills of Professional Evaluation. Baltimore: University Park Press, 1980.
MLA引文COHEN, Mikal R dkk. The Skills of Professional Evaluation. University Park Press, 1980.
警告：这些引文格式不一定是100％准确.