Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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