(1997). Preserving the country's water resources. IN Editorial [column]. Manila Bulletin.
芝加哥风格引文"Preserving the Country's Water Resources. IN Editorial [column]." Manila Bulletin 1997.
MLA引文"Preserving the Country's Water Resources. IN Editorial [column]." Manila Bulletin, 1997.
警告:这些引文格式不一定是100%准确.