Simmons, I. (1991). Earth, Air and water: resources: And environment in the late 20th century. Edward Arnold.
Chicago-Zitierstil (17. Ausg.)Simmons, I.G. Earth, Air and Water: Resources: And Environment in the Late 20th Century. London: Edward Arnold, 1991.
MLA-Zitierstil (9. Ausg.)Simmons, I.G. Earth, Air and Water: Resources: And Environment in the Late 20th Century. Edward Arnold, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.