Alcala, A. C. (2005). The Philippines & its rich biodiversity. IN Educators speak [column]. Manila Bulletin.
芝加哥风格引文Alcala, Angel C. "The Philippines & Its Rich Biodiversity. IN Educators Speak [column]." Manila Bulletin 2005.
MLA引文Alcala, Angel C. "The Philippines & Its Rich Biodiversity. IN Educators Speak [column]." Manila Bulletin, 2005.
警告：这些引文格式不一定是100％准确.