Beavon, K. S. O. (1977). Central place theory: A reinterpretation. Longman.
Chicago Style aipamenaBeavon, Keith Sidney Orrock. Central Place Theory: A Reinterpretation. London: Longman, 1977.
MLA aipamenaBeavon, Keith Sidney Orrock. Central Place Theory: A Reinterpretation. Longman, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.