United States. (1991). Selected environmental law statutes (1991-92 educational ed.). West Pub. Co.
Citazione stile Chigago Style (17a edizione)United States. Selected Environmental Law Statutes. 1991-92 educational ed. St. Paul, Minn: West Pub. Co, 1991.
Citatione MLA (9a ed.)United States. Selected Environmental Law Statutes. 1991-92 educational ed. West Pub. Co, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.