Philippines. National Historical Institute. (2006). Historical calendar (1970-2000). National Historical Institute.
Citazione stile Chigago Style (17a edizione)Philippines. National Historical Institute. Historical Calendar (1970-2000). Manila: National Historical Institute, 2006.
Citatione MLA (9a ed.)Philippines. National Historical Institute. Historical Calendar (1970-2000). National Historical Institute, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.