Não informado. (2020). USDA Forest Service Resource Bulletin INT. US Department of Agriculture, Intermountain Forest and Range Experiment Station.
Lua i Stíl Chicago (17ú heag.)Não informado. USDA Forest Service Resource Bulletin INT. Ogden, Utah: US Department of Agriculture, Intermountain Forest and Range Experiment Station, 2020.
Lua MLA (8ú heag.)Não informado. USDA Forest Service Resource Bulletin INT. US Department of Agriculture, Intermountain Forest and Range Experiment Station, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.