Zafra, N. (1993). The colonization of the Philippines and the beginnings of the Spanish city of Manila. National Historical Institute.
Citazione stile Chigago Style (17a edizione)Zafra, Nicolas. The Colonization of the Philippines and the Beginnings of the Spanish City of Manila. Manila: National Historical Institute, 1993.
Citatione MLA (9a ed.)Zafra, Nicolas. The Colonization of the Philippines and the Beginnings of the Spanish City of Manila. National Historical Institute, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.