Wertheimer, M. (1959). Productive thinking (enlarged ed.). Harper & Brothers publishers.
Citación estilo ChicagoWertheimer, Max. Productive Thinking. enlarged ed. New York: Harper & Brothers publishers, 1959.
Cita MLAWertheimer, Max. Productive Thinking. enlarged ed. Harper & Brothers publishers, 1959.
Warning: These citations may not always be 100% accurate.