SS Negi. (1986). A hand book of forestry. International book distributors.
Chicago Style aipamenaSS Negi. A Hand Book of Forestry. Dehra Dun: International book distributors, 1986.
MLA aipamenaSS Negi. A Hand Book of Forestry. International book distributors, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.