APA (7th ed.) Zitazioa

BERRY, B. J. (1970). Geographic perspectives on urban systems. Prentice Hall.

Chicago Style (17th ed.) Zitazioa

BERRY, Brian J.L. Geographic Perspectives on Urban Systems. Englewood cliffs, N. J.: Prentice Hall, 1970.

MLA (9th ed.) Zitazioa

BERRY, Brian J.L. Geographic Perspectives on Urban Systems. Prentice Hall, 1970.