(2003). Environment (22nd ed.). Dushkin Pub. Group.
Chicago Style (17th ed.) CitationEnvironment. 22nd ed. Guilford, Conn: Dushkin Pub. Group, 2003.
MLA (9th ed.) CitationEnvironment. 22nd ed. Dushkin Pub. Group, 2003.
Warning: These citations may not always be 100% accurate.