Siegel Jeff, Nelder Chris, & Hodge Nick. (2008). Roadless Rules: The Struggle for the Last Wild Forests. American: Wiley.
Chicago Style aipamenaSiegel Jeff, Nelder Chris, và Hodge Nick. Roadless Rules: The Struggle for the Last Wild Forests. American: Wiley, 2008.
MLA aipamenaSiegel Jeff, Nelder Chris, và Hodge Nick. Roadless Rules: The Struggle for the Last Wild Forests. American: Wiley, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.