Grobecker, C. (1996). Water and nitrogen balances for the upper Rhine catchment area.
Chicago-Zitierstil (17. Ausg.)Grobecker, Claire. Water and Nitrogen Balances for the Upper Rhine Catchment Area. Wiesbaden, 1996.
MLA-Zitierstil (8. Ausg.)Grobecker, Claire. Water and Nitrogen Balances for the Upper Rhine Catchment Area. 1996.
警告：這些引文格式不一定是100％准確.