Cita APA (7a ed.)
Clarke, G. (1993). A text ahead of its time. Geography, 78, 211-214.
Cita Chicago Style (17a ed.)
Clarke, Graham. "A Text Ahead of Its Time." Geography 78 (1993): 211-214.
Cita MLA (9a ed.)
Clarke, Graham. "A Text Ahead of Its Time." Geography, vol. 78, 1993, pp. 211-214.
Precaución: Estas citas no son 100% exactas.