APA (7 वां संस्करण) प्रशस्ति पत्र

Philippines Department of Tourism Bureau of Special Services & Philippines. (1992). Rules and regulations to govern the accreditation of travel and tour services. Bureau of Special Services, Department of Tourism.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Philippines Department of Tourism Bureau of Special Services और Philippines. Rules and Regulations to Govern the Accreditation of Travel and Tour Services. [Manila]: Bureau of Special Services, Department of Tourism, 1992.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Philippines Department of Tourism Bureau of Special Services और Philippines. Rules and Regulations to Govern the Accreditation of Travel and Tour Services. Bureau of Special Services, Department of Tourism, 1992.