APA stil citiranja

Gillen, T. (1997). Assertiveness: Assertiveness. London: Institute of personnel and development.

Chicago stil citiranja

Gillen, Terry. Assertiveness: Assertiveness. London: Institute of personnel and development, 1997.

MLA stil citiranja

Gillen, Terry. Assertiveness: Assertiveness. London: Institute of personnel and development, 1997.

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