Stubbs, D. (1985). How to use assertiveness at work. Gower.
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Chicago-čujuhus (17. p.)
Stubbs, David. How to Use Assertiveness at Work. Aldershot, Hants, England ; Brookfield, Vt., U.S.A.: Gower, 1985.
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MLA-čujuhus (9. p.)
Stubbs, David. How to Use Assertiveness at Work. Gower, 1985.
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