Del Mundo, I. A. Q. (2013). Sorsogon's hidden treasures. Philippine Starweek.
Lua i Stíl Chicago (17ú heag.)Del Mundo, Ida Anita Q. "Sorsogon's Hidden Treasures." Philippine Starweek 2013.
Lua MLA (9ú heag.)Del Mundo, Ida Anita Q. "Sorsogon's Hidden Treasures." Philippine Starweek, 2013.
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