APA-čujuhus (7. p.)

SHELTOR, N., & BURTON, S. (1994). Assertiveness skills. Businnes One Irwin.

Chicago-čujuhus (17. p.)

SHELTOR, Nelda, juo Sharon BURTON. Assertiveness Skills. Burr Ridge: Businnes One Irwin, 1994.

MLA-čujuhus (9. p.)

SHELTOR, Nelda, juo Sharon BURTON. Assertiveness Skills. Businnes One Irwin, 1994.

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