Robertson, D. M., Weigel, B. M., & Graczyk, D. J. (2008). Nutrient concentrations and their relations to the biotic integrity of nonwadeable rivers in Wisconsin.
Chicago-Zitierstil (17. Ausg.)Robertson, Dale M., Brian M. Weigel, und David J. Graczyk. Nutrient Concentrations and Their Relations to the Biotic Integrity of Nonwadeable Rivers in Wisconsin. Reston, VA, 2008.
MLA-Zitierstil (9. Ausg.)Robertson, Dale M., et al. Nutrient Concentrations and Their Relations to the Biotic Integrity of Nonwadeable Rivers in Wisconsin. 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.