Kjellström, B. (1972). Be expert with map and compass: The "orienteering" handbook (New rev. ed.). Scribner.
Chicago Style aipamenaKjellström, Björn. Be Expert with Map and Compass: The "Orienteering" Handbook. New rev. ed. New York: Scribner, 1972.
MLA aipamenaKjellström, Björn. Be Expert with Map and Compass: The "Orienteering" Handbook. New rev. ed. Scribner, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.