Cita APA (7a ed.)
Hughes, J. C. (May89). Beagle Graphics. Professional Geographer, 41(2), 231-233.
Cita Chicago Style (17a ed.)
Hughes, James C. "Beagle Graphics." Professional Geographer 41, no. 2 (May89): 231-233.
Cita MLA (9a ed.)
Hughes, James C. "Beagle Graphics." Professional Geographer, vol. 41, no. 2, May89, pp. 231-233.
Precaución: Estas citas no son 100% exactas.