Pettigrew, A. (1973). Occupational Specialization as an Emergent Process.
芝加哥风格引文Pettigrew, A. Occupational Specialization as an Emergent Process. 1973.
MLA引文Pettigrew, A. Occupational Specialization as an Emergent Process. 1973.
警告：这些引文格式不一定是100％准确.