United States. (1991). Selected environmental law statutes (1991-92 educational ed.). West Pub. Co.
芝加哥风格引文United States. Selected Environmental Law Statutes. 1991-92 educational ed. St. Paul, Minn: West Pub. Co, 1991.
MLA引文United States. Selected Environmental Law Statutes. 1991-92 educational ed. West Pub. Co, 1991.
警告：这些引文格式不一定是100％准确.