Janković, D. (1964). Synopsis of biological data on European grayling: Thymallus thymallus (Linnaeus) 1758. Fisheries Division, Biology Branch, Food and Agriculture Organization of the United Nations.
Dyfyniad Arddull ChicagoJanković, Draga. Synopsis of Biological Data on European Grayling: Thymallus Thymallus (Linnaeus) 1758. Rome: Fisheries Division, Biology Branch, Food and Agriculture Organization of the United Nations, 1964.
Dyfyniad MLAJanković, Draga. Synopsis of Biological Data on European Grayling: Thymallus Thymallus (Linnaeus) 1758. Fisheries Division, Biology Branch, Food and Agriculture Organization of the United Nations, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.