Viola flettii (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Viola flettii" in English language version.

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Houston, D. B.; Schreiner, E. G.; Buckingham, N. M. (12 Dec 2007). "3: Biogeography of the Olympic Peninsula". In Houston, Douglas B.; Schreiner, Edward G.; Moorhead, Bruce B. (eds.). Mountain Goats in Olympic National Park: Biology and Management of an Introduced Species (Scientific Monograph). NPS/NROLYM/NRSM-94/25. United States Department of the Interior: National Park Service (published 1994). ASIN B000GVJV3U. Retrieved 2014-08-04.
Schreiner, E. G.; Gracz, M. B.; Kaye, T. N.; Woodward, A.; Buckingham, N. M. (12 Dec 2007). "12: Mountain Goat Herbivory". In Houston, Douglas B.; Schreiner, Edward G.; Moorhead, Bruce B. (eds.). Mountain Goats in Olympic National Park: Biology and Management of an Introduced Species (Scientific Monograph). NPS/NROLYM/NRSM-94/25. United States Department of the Interior: National Park Service (published 1994). ASIN B000GVJV3U. Retrieved 2014-08-04.

Houston, D. B.; Schreiner, E. G.; Buckingham, N. M. (12 Dec 2007). "3: Biogeography of the Olympic Peninsula". In Houston, Douglas B.; Schreiner, Edward G.; Moorhead, Bruce B. (eds.). Mountain Goats in Olympic National Park: Biology and Management of an Introduced Species (Scientific Monograph). NPS/NROLYM/NRSM-94/25. United States Department of the Interior: National Park Service (published 1994). ASIN B000GVJV3U. Retrieved 2014-08-04.
Schreiner, E. G.; Gracz, M. B.; Kaye, T. N.; Woodward, A.; Buckingham, N. M. (12 Dec 2007). "12: Mountain Goat Herbivory". In Houston, Douglas B.; Schreiner, Edward G.; Moorhead, Bruce B. (eds.). Mountain Goats in Olympic National Park: Biology and Management of an Introduced Species (Scientific Monograph). NPS/NROLYM/NRSM-94/25. United States Department of the Interior: National Park Service (published 1994). ASIN B000GVJV3U. Retrieved 2014-08-04.

"Viola flettii Piper". PLANTS Profile. United States Department of Agriculture; Natural Resources Conservation Service. Retrieved 2014-08-03.

"Washington Natural Heritage Program Report Number: 2019-05.1" (PDF). Department of Natural Resources. Washington Natural Heritage Program. July 25, 2019. Retrieved 2020-07-01.

"Viola flettii". WTU Herbarium Image Collection. Burke Museum, University of Washington. Retrieved 2020-07-01.

Sullivan, Steven. K. (2014). "Viola flettii". Wildflower Search. Retrieved 2014-08-03.