Quezon, M. L. The Philippine islands: What they are and what they would be.
Citazione stile Chigago Style (17a edizione)Quezon, Manuel L. The Philippine Islands: What They Are and What They Would Be.
Citatione MLA (9a ed.)Quezon, Manuel L. The Philippine Islands: What They Are and What They Would Be.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.