APA-čujuhus (7. p.)

Lightbown , P. M. (2015). How Languages are: Learned (4th ed.). OUP.

Chicago-čujuhus (17. p.)

Lightbown , Patsy M. How Languages Are: Learned. 4th ed. UK: OUP, 2015.

MLA-čujuhus (9. p.)

Lightbown , Patsy M. How Languages Are: Learned. 4th ed. OUP, 2015.

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