APA (7th ed.) Zitazioa
Scholander, P. F. Lichens from Southeast Greenland, 1937.
Chicago Style (17th ed.) Zitazioa
Scholander, P. F. Lichens from Southeast Greenland, 1937.
MLA (9th ed.) Zitazioa
Scholander, P. F. Lichens from Southeast Greenland, 1937.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.