"the Water Board". Consorzio di Bonifica II Circondario - Polesine di San Giorgio. اطلع عليه بتاريخ 2009-06-06.[وصلة مكسورة]
comune.udine.it
Springs and spring watercourses: Springs in the Northern Italian plains(PDF). Italian Habitats. Italian Ministry of the Environment and Territory Protection / Ministero dell’Ambiente e della Tutela del Territorio, Friuli Museum of Natural History / Museo Friulano di Storia Naturale, Comune di Udine. 2002. ISBN:88-88192-04-2. مؤرشف من الأصل(pdf) في 2019-12-15. اطلع عليه بتاريخ 2009-06-06.
Springs and spring watercourses: Springs in the Northern Italian plains(PDF). Italian Habitats. Italian Ministry of the Environment and Territory Protection / Ministero dell’Ambiente e della Tutela del Territorio, Friuli Museum of Natural History / Museo Friulano di Storia Naturale, Comune di Udine. 2002. ISBN:88-88192-04-2. مؤرشف من الأصل(pdf) في 2019-12-15. اطلع عليه بتاريخ 2009-06-06.