Philippines. Department of Tourism. Negros Oriental. (1998). Negros Oriental: 1998 Region VII tourism situationer. Department of Tourism. Regional Office.
Citazione stile Chigago Style (17a edizione)Philippines. Department of Tourism. Negros Oriental. Negros Oriental: 1998 Region VII Tourism Situationer. Legaspi Extn. Cebu City: Department of Tourism. Regional Office, 1998.
Citatione MLA (9a ed.)Philippines. Department of Tourism. Negros Oriental. Negros Oriental: 1998 Region VII Tourism Situationer. Department of Tourism. Regional Office, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.