IUCN European Programme. (1997). Fishing for a Living: The Ecology and Economics of Fishponds in Central Europe.
Chicago-viite (17. p.)IUCN European Programme. Fishing for a Living: The Ecology and Economics of Fishponds in Central Europe. 1997.
MLA-viite (9. p.)IUCN European Programme. Fishing for a Living: The Ecology and Economics of Fishponds in Central Europe. 1997.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.