Cita APA (7a ed.)
(1998). Metropolitan areas in the 1990s. American Demographics, 20(5), 59-63.
Cita Chicago Style (17a ed.)
"Metropolitan Areas in the 1990s." American Demographics 20, no. 5 (1998): 59-63.
Cita MLA (9a ed.)
"Metropolitan Areas in the 1990s." American Demographics, vol. 20, no. 5, 1998, pp. 59-63.
Precaución: Estas citas no son 100% exactas.