Alexander, J. (1979). Economic grography (2nd.). Prentice Hall.
Chicago Style aipamenaAlexander, J. Economic Grography. 2nd. New Delhi: Prentice Hall, 1979.
MLA aipamenaAlexander, J. Economic Grography. 2nd. Prentice Hall, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.