Leff, H. L. (1978). Experience, environment, and human potentials. Oxford University Press.
Tohutoru Kātū Chicago (17th ed.)Leff, Herbert L. Experience, Environment, and Human Potentials. New York: Oxford University Press, 1978.
Tohutoro MLA (9th ed.)Leff, Herbert L. Experience, Environment, and Human Potentials. Oxford University Press, 1978.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.