Found in articles
p.715. Saturnino Calleja Fernandez, Madrid. Blair, Emma Helen and Robertson, James Alexander (1904). "The Philippine Islands 1493-1803, Vol.17", pp. 304-305
news}}: CS1 maint: date auto-translated (link) Robertson (1873–1939), Emma Helen Blair (d 1911) James Alexander. The Philippine Islands, 1493–1898: explorations
Mga Kapampangan
Filipinas, Blair at Robertson bolyum 5, pahina 34–187 (sa Ingles) Henson, Mariano A. 1965. The Province of Pampanga and Its Towns: A.D. 1300–1965. ika-4
island of Luzon and its neighboring islands..." BLAIR, Emma Helen & ROBERTSON, James Alexander, eds. (1903). The Philippine Islands, 1493–1803, Volume 05
Buenaventura Pedro Chirino Antonio de Morga Emma Helen Blair and James A. Robertson Francisco Ignacio Alcina Francisco Colin, S.J. Felix Huerta, O.F.M