Haas, Gordon R.; McPhail, J. D. (1991). "Systematics and Distributions of Dolly Varden (Salvelinus malma) and Bull Trout (Salvelinus confluentus) in North America". Canadian Journal of Fisheries and Aquatic Sciences. 48 (11). Ottawa: NRC Research Press: 2191–2211. Bibcode:1991CJFAS..48.2191H. doi:10.1139/f91-259.
Haas, Gordon R.; McPhail, J. D. (1991). "Systematics and Distributions of Dolly Varden (Salvelinus malma) and Bull Trout (Salvelinus confluentus) in North America". Canadian Journal of Fisheries and Aquatic Sciences. 48 (11). Ottawa: NRC Research Press: 2191–2211. Bibcode:1991CJFAS..48.2191H. doi:10.1139/f91-259.
"Washington's Native Char". Fishing & Shellfishing. Washington Department of Fish and Wildlife. Archived from the original on 2014-11-08. Retrieved 2014-02-05.
"Washington's Native Char". Fishing & Shellfishing. Washington Department of Fish and Wildlife. Archived from the original on 2014-11-08. Retrieved 2014-02-05.