(1994). Abra Province: Rustic setting, resorts, relaxed lifetyle, rich Spanish culture. Manila Bulletin.
Chicago Style (17. basım) Atıf"Abra Province: Rustic Setting, Resorts, Relaxed Lifetyle, Rich Spanish Culture." Manila Bulletin 1994.
MLA (9th ed.) Atıf"Abra Province: Rustic Setting, Resorts, Relaxed Lifetyle, Rich Spanish Culture." Manila Bulletin, 1994.
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