Chopra, R. (1990). Office management/7e (7th ed.). Himalaya Publishing House.
Čikaški stil citiranjaChopra, R.K. Office Management/7e. 7th ed. Bombay: Himalaya Publishing House, 1990.
MLA način citiranjaChopra, R.K. Office Management/7e. 7th ed. Himalaya Publishing House, 1990.
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