APA-referens (7:e uppl.)

Philippines. Department of Tourism. Davao Region. (2009). Biyahe ta Mindanaw: Tourism and transport MIndanao situationer 2009. Department of Tourism.

Chicago-referens (17:e uppl.)

Philippines. Department of Tourism. Davao Region. Biyahe Ta Mindanaw: Tourism and Transport MIndanao Situationer 2009. Davao City: Department of Tourism, 2009.

MLA-referens (9:e uppl.)

Philippines. Department of Tourism. Davao Region. Biyahe Ta Mindanaw: Tourism and Transport MIndanao Situationer 2009. Department of Tourism, 2009.