Philippine Book Company. (1949). An outline of Philippine social life and progress. s.n.
Citazione stile Chigago Style (17a edizione)Philippine Book Company. An Outline of Philippine Social Life and Progress. [Manila: s.n, 1949.
Citatione MLA (9a ed.)Philippine Book Company. An Outline of Philippine Social Life and Progress. s.n, 1949.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.