(2001). Comparative water-quality assessment of the Hai He River basin in the People's Republic of China and three similar basins in the United States. U.S. Geological Survey.
Chicago-Zitierstil (17. Ausg.)Comparative Water-quality Assessment of the Hai He River Basin in the People's Republic of China and Three Similar Basins in the United States. Denver, Co: U.S. Geological Survey, 2001.
MLA-Zitierstil (9. Ausg.)Comparative Water-quality Assessment of the Hai He River Basin in the People's Republic of China and Three Similar Basins in the United States. U.S. Geological Survey, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.