IBON Philippines Databank & Research Center. (1996). IBON Philippines profile. IBON Philippines Databank & Research Center.
Lua i Stíl Chicago (17ú heag.)IBON Philippines Databank & Research Center. IBON Philippines Profile. Manila: IBON Philippines Databank & Research Center, 1996.
Lua MLA (9ú heag.)IBON Philippines Databank & Research Center. IBON Philippines Profile. IBON Philippines Databank & Research Center, 1996.
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