Leff, H. L. (1978). Experience, environment, and human potentials. Oxford University Press.
Čikaški stil citiranja (17. izdanje)Leff, Herbert L. Experience, Environment, and Human Potentials. New York: Oxford University Press, 1978.
MLA način citiranja (9. izdanje)Leff, Herbert L. Experience, Environment, and Human Potentials. Oxford University Press, 1978.
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