Page, C. N. (1982). Ferns of Britain and Ireland. Cambridge University Press.
Chicago Style aipamenaPage, C. N. Ferns of Britain and Ireland. New York: Cambridge University Press, 1982.
MLA aipamenaPage, C. N. Ferns of Britain and Ireland. Cambridge University Press, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.