Del Castillo, L. B. (2002). Environmental management now a must due to globalization. Manila Times.
芝加哥风格引文Del Castillo, Leah B. "Environmental Management Now a Must Due to Globalization." Manila Times 2002.
MLA引文Del Castillo, Leah B. "Environmental Management Now a Must Due to Globalization." Manila Times, 2002.
警告：这些引文格式不一定是100％准确.