Helson, H. (1964). Adaptation-level theory: An experimental and systematic approach to behavior. Harper & Row.
芝加哥风格引文Helson, Harry. Adaptation-level Theory: An Experimental and Systematic Approach to Behavior. New York: Harper & Row, 1964.
MLA引文Helson, Harry. Adaptation-level Theory: An Experimental and Systematic Approach to Behavior. Harper & Row, 1964.
警告：这些引文格式不一定是100％准确.