Belgosa Business Communications & Pascual, R. J. (1997). Philippine regional profiles 1997. Belgosa Business Communications.
Citazione stile Chigago Style (17a edizione)Belgosa Business Communications e Ruben J. Pascual. Philippine Regional Profiles 1997. Makati City: Belgosa Business Communications, 1997.
Citatione MLA (9a ed.)Belgosa Business Communications e Ruben J. Pascual. Philippine Regional Profiles 1997. Belgosa Business Communications, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.