International Waterfowl and Wetlands Research Bureau : Grado. (1992). Managing Mediterraean wetlands and their birds for the year 2000 and beyond: A strategy to stop and reverse wetland loss and degradation in the Mediterranean Basin. IWRB and Regione Friuli-Venezia Giulia.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Waterfowl and Wetlands Research Bureau : Grado. Managing Mediterraean Wetlands and Their Birds for the Year 2000 and Beyond: A Strategy to Stop and Reverse Wetland Loss and Degradation in the Mediterranean Basin. Trieste: IWRB and Regione Friuli-Venezia Giulia, 1992.
Παραπομπή σε μορφή MLA (9th εκδ.)International Waterfowl and Wetlands Research Bureau : Grado. Managing Mediterraean Wetlands and Their Birds for the Year 2000 and Beyond: A Strategy to Stop and Reverse Wetland Loss and Degradation in the Mediterranean Basin. IWRB and Regione Friuli-Venezia Giulia, 1992.