(1990). Environmental health criteria 99.
芝加哥风格引文Environmental Health Criteria 99. 1990.
MLA引文Environmental Health Criteria 99. 1990.
警告：这些引文格式不一定是100％准确.
APA引文
(1990). Environmental health criteria 99.
芝加哥风格引文Environmental Health Criteria 99. 1990.
MLA引文Environmental Health Criteria 99. 1990.