Não informado. (2022). US Forest Service Research Paper RM. Rocky Mountain Forest and Range Experimemt Station.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. US Forest Service Research Paper RM. Fort Collins, Colo: Rocky Mountain Forest and Range Experimemt Station, 2022.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. US Forest Service Research Paper RM. Rocky Mountain Forest and Range Experimemt Station, 2022.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.