BERRY, B. J. (1972). City classification handbook: Methods and applications. Wiley Interscience.
Cita Chicago (17th ed.)BERRY, Brian J.L. City Classification Handbook: Methods and Applications. New York: Wiley Interscience, 1972.
Cita MLA (9th ed.)BERRY, Brian J.L. City Classification Handbook: Methods and Applications. Wiley Interscience, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.