United States. (1991). Selected environmental law statutes (1991-92 educational ed.). West Pub. Co.
Cita Chicago (17th ed.)United States. Selected Environmental Law Statutes. 1991-92 educational ed. St. Paul, Minn: West Pub. Co, 1991.
Cita MLA (9th ed.)United States. Selected Environmental Law Statutes. 1991-92 educational ed. West Pub. Co, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.