Pieri, L., Ventura, F., Ventura, M., Tagliavini, M., Ponti, M., Pistocchi, R., . . . Pisa, P. R. (2011, December). Chemical and biological indicators of water quality in three agricultural watersheds of the Po valley, Italy. Italian Journal of Agronomy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pieri, Linda, Francesca Ventura, Maurizio Ventura, Massimo Tagliavini, Massimo Ponti, Rossella Pistocchi, Sergio Albertazzi, Marco Vignudelli, و Paola Rossi Pisa. "Chemical and Biological Indicators of Water Quality in Three Agricultural Watersheds of the Po Valley, Italy." Italian Journal of Agronomy Dec. 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Pieri, Linda, et al. "Chemical and Biological Indicators of Water Quality in Three Agricultural Watersheds of the Po Valley, Italy." Italian Journal of Agronomy, Dec. 2011.