(1974). Encyclopedia of world geography: Man and his world today. Octopus.
Chicago Style aipamenaEncyclopedia of World Geography: Man and His World Today. London: Octopus, 1974.
MLA aipamenaEncyclopedia of World Geography: Man and His World Today. Octopus, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.