Παραπομπή APA

Levenstein, A. (1962). Why people work: Changing incentives in a troubled world. New York: Collier Books.

Παραπομπή Chicago Style

Levenstein, Aaron. Why People Work: Changing Incentives in a Troubled World. New York: Collier Books, 1962.

Παραπομπή MLA

Levenstein, Aaron. Why People Work: Changing Incentives in a Troubled World. New York: Collier Books, 1962.

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