APA-čujuhus (7. p.)

Gross, R. (1977). The lifelong learner. Simon and Schuster.

Chicago-čujuhus (17. p.)

Gross, Ronald. The Lifelong Learner. New York: Simon and Schuster, 1977.

MLA-čujuhus (9. p.)

Gross, Ronald. The Lifelong Learner. Simon and Schuster, 1977.

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