Cita APA (7a ed.)
(1998). Volunteers to clean up ballparks in five cities. American City & County, 113(4), 16-17.
Cita Chicago Style (17a ed.)
"Volunteers to Clean Up Ballparks in Five Cities." American City & County 113, no. 4 (1998): 16-17.
Cita MLA (9a ed.)
"Volunteers to Clean Up Ballparks in Five Cities." American City & County, vol. 113, no. 4, 1998, pp. 16-17.
Precaución: Estas citas no son 100% exactas.