Drake, R. F. (1999). Understanding disability policies. London: Macmillan.
Trích dẫn kiểu ChicagoDrake, Robert F. Understanding Disability Policies. London: Macmillan, 1999.
MLA引文Drake, Robert F. Understanding Disability Policies. London: Macmillan, 1999.
警告：这些引文格式不一定是100％准确.