Hayes, S. P. (1966). Evaluating development projects: A manual for the use of field workers (2nd ed., rev.). Unesco.
芝加哥风格引文Hayes, Samuel Perkins. Evaluating Development Projects: A Manual for the Use of Field Workers. 2nd ed., rev. [Paris]: Unesco, 1966.
MLA引文Hayes, Samuel Perkins. Evaluating Development Projects: A Manual for the Use of Field Workers. 2nd ed., rev. Unesco, 1966.
警告：这些引文格式不一定是100％准确.