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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Philippines Department of Tourism Bureau of Special Services và Philippines. Rules and Regulations Governing the Accreditation of Tourism-related Establishments. [Manila]: Bureau of Special Services, Department of Tourism, 1992.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Philippines Department of Tourism Bureau of Special Services và Philippines. Rules and Regulations Governing the Accreditation of Tourism-related Establishments. Bureau of Special Services, Department of Tourism, 1992.
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