Joensen, A. H. (1974). Waterfowl populations in Denmark: 1965 - 1973 ; a survey of the non-breeding populations of ducks, swans and coot and their shooting utilization.
Chicago-Zitierstil (17. Ausg.)Joensen, Anders Holm. Waterfowl Populations in Denmark: 1965 - 1973 ; a Survey of the Non-breeding Populations of Ducks, Swans and Coot and Their Shooting Utilization. Rønde, 1974.
MLA-Zitierstil (9. Ausg.)Joensen, Anders Holm. Waterfowl Populations in Denmark: 1965 - 1973 ; a Survey of the Non-breeding Populations of Ducks, Swans and Coot and Their Shooting Utilization. 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.