Noche, M. M. L. d. C. (2005). Lonely sentinels of the sea: The Spanish lighthouses in the Philippines. UST Pub. House.
Chicago-referens (17:e uppl.)Noche, Manuel Maximo Lopez del Castillo. Lonely Sentinels of the Sea: The Spanish Lighthouses in the Philippines. Manila: UST Pub. House, 2005.
MLA-referens (9:e uppl.)Noche, Manuel Maximo Lopez del Castillo. Lonely Sentinels of the Sea: The Spanish Lighthouses in the Philippines. UST Pub. House, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.