De Viana, A. V. (2013). St. Pedro Calungsod and his companions. Boletin Eclesiastico de Filipinas.
Chicago-viite (17. p.)De Viana, Augusto V. "St. Pedro Calungsod and His Companions." Boletin Eclesiastico De Filipinas 2013.
MLA-viite (9. p.)De Viana, Augusto V. "St. Pedro Calungsod and His Companions." Boletin Eclesiastico De Filipinas, 2013.
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