Omar, A. F. (2013). Criteria and processes of handling customer complaint in facility management.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOmar, Amir Farid. Criteria and Processes of Handling Customer Complaint in Facility Management. 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOmar, Amir Farid. Criteria and Processes of Handling Customer Complaint in Facility Management. 2013.
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