Lua APA (7ú heag.)

Wertheimer, M. (1959). Productive thinking (enlarged ed.). Harper & Brothers publishers.

Lua i Stíl Chicago (17ú heag.)

Wertheimer, Max. Productive Thinking. enlarged ed. New York: Harper & Brothers publishers, 1959.

Lua MLA (9ú heag.)

Wertheimer, Max. Productive Thinking. enlarged ed. Harper & Brothers publishers, 1959.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.