Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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