Three Sisters (Oregon) (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Three Sisters (Oregon)" in Polish language version.

refsWebsite

Global rank Polish rank

2,133^rd place

1,346^th place

167^th place

323^rd place

fs.fed.us

Oregon Volcanoes - North Sister Volcano. [w:] Deschutes & Ochoco National Forests - Crooked River National Grassland [on-line]. United States Forest Service, 25 marca 2004. [dostęp 2008-09-18].
Oregon Volcanoes - Middle Sister Volcano. [w:] Deschutes & Ochoco National Forests - Crooked River National Grassland [on-line]. United States Forest Service, 25 marca 2004. [dostęp 2008-09-18].
Oregon Volcanoes - South Sister Volcano. [w:] Deschutes & Ochoco National Forests - Crooked River National Grassland [on-line]. United States Forest Service, 25 marca 2004. [dostęp 2008-09-19].