▁British ▁Columbia ▁and ▁Washington . ▁Occ as ional ▁P aper ▁Series ▁ 2 1 . ▁Victoria : ▁British ▁Columbia ▁Provin cial ▁Museum . ▁Vog t , ▁Hans . ▁( 1 9 4 0 ). ▁Sal ish an ▁Studies . ▁Compar ative ▁Notes ▁on ▁K alis pel , ▁Sp ok ane , ▁Col ville ▁and ▁Co eur ▁d ' Al ene . ▁Os lo : ▁Sk rif ter ▁ut g itt ▁av ▁Det ▁N ors ke ▁Vid ensk aps - A kadem i ▁i ▁Os lo , ▁II , ▁Hist .- fil os . ▁K lasse , ▁No . ▁ 2 , ▁Jacob ▁Dy b wad . ▁Wat kins , ▁Donald . ▁( 1 9 7 2 ). ▁A ▁Description ▁of ▁the ▁Ph on emes ▁and ▁Position ▁Class es ▁in ▁the ▁Mor ph ology ▁of ▁Head ▁of ▁the ▁Lake ▁Ok an agan . ▁Ph . D . ▁dis sert ation , ▁University ▁of ▁Al berta , ▁Ed mont on . ▁Wat kins , ▁Donald . ▁( 1 9 7 4 ). ▁A ▁Bo as ▁original . ▁I J AL ▁ 4 0 : 2 9 – 4 3 . ▁Young , ▁Philip . ▁( 1 9 7 1 ). ▁A ▁Ph on ology ▁of ▁Ok an og an . ▁M . A . ▁th esis , ▁University ▁of ▁Kansas . ▁ ▁External ▁links ▁ ▁Col ville - O kan agan ▁language ▁learning ▁resources ▁at ▁End anger ed ▁L anguages ▁Sal ish ▁School ▁of ▁Sp ok ane ▁En ' ow kin ▁Centre ▁Inter ior ▁Sal