Não informado. (2022). USDA Forest Service Resource Bulletin PNW. Pacific Northwest Forest and Range Experiment Station.
Lua i Stíl Chicago (17ú heag.)Não informado. USDA Forest Service Resource Bulletin PNW. Portland, Ore: Pacific Northwest Forest and Range Experiment Station, 2022.
Lua MLA (8ú heag.)Não informado. USDA Forest Service Resource Bulletin PNW. Pacific Northwest Forest and Range Experiment Station, 2022.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.