Pefianco, R. V. (2001). Must tourism leave the southern islets. Manila Bulletin.
Chicagoスタイル(17版)引用形式Pefianco, Romeo V. "Must Tourism Leave the Southern Islets." Manila Bulletin 2001.
MLA(9版)引用形式Pefianco, Romeo V. "Must Tourism Leave the Southern Islets." Manila Bulletin, 2001.
警告: この引用は必ずしも正確ではありません.