APA-čujuhus (7. p.)

Lightbown, P. M., & Spada, N. (1999). How languages are learned (2a. ed.). Oxford University.

Chicago-čujuhus (17. p.)

Lightbown, Patsy M., juo Nina Spada. How Languages Are Learned. 2a. ed. Oxford: Oxford University, 1999.

MLA-čujuhus (9. p.)

Lightbown, Patsy M., juo Nina Spada. How Languages Are Learned. 2a. ed. Oxford University, 1999.

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