APA (7th ed.) Citation

Gall, S. B. (2012). Worldmark encyclopedia of U.S. and Canadian environmental issues. Gale.

Chicago Style (17th ed.) Citation

Gall, Susan B. Worldmark Encyclopedia of U.S. and Canadian Environmental Issues. Detroit [u.a.]: Gale, 2012.

MLA (9th ed.) Citation

Gall, Susan B. Worldmark Encyclopedia of U.S. and Canadian Environmental Issues. Gale, 2012.