Wertheimer, M. (1959). Productive thinking (enlarged ed.). Harper & Brothers publishers.
芝加哥风格引文Wertheimer, Max. Productive Thinking. enlarged ed. New York: Harper & Brothers publishers, 1959.
MLA引文Wertheimer, Max. Productive Thinking. enlarged ed. Harper & Brothers publishers, 1959.
警告：这些引文格式不一定是100％准确.