Gorden, M., & Gorden, M. (1972). Environmental management; science and politics. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Gorden, Morten, agus Marsha Gorden. Environmental Management; Science and Politics. Boston: Allyn and Bacon, 1972.
Lua MLA (9ú heag.)Gorden, Morten, agus Marsha Gorden. Environmental Management; Science and Politics. Allyn and Bacon, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.