Philippines Department of Tourism Bureau of Special Services & Philippines. (1992). Rules and regulations governing the accreditation of tourism-related establishments. Bureau of Special Services, Department of Tourism.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines Department of Tourism Bureau of Special Services और Philippines. Rules and Regulations Governing the Accreditation of Tourism-related Establishments. [Manila]: Bureau of Special Services, Department of Tourism, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines Department of Tourism Bureau of Special Services और Philippines. Rules and Regulations Governing the Accreditation of Tourism-related Establishments. Bureau of Special Services, Department of Tourism, 1992.
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