Cita APA (7a ed.)
Huff, D. L., & Jenks, G. F. (Dec68). A GRAPHIC INTERPRETATION OF THE FRICTION OF DISTANCE IN GRAVITY MODELS. Annals of the Association of American Geographers, 58(4), 814-825.
Cita Chicago Style (17a ed.)
Huff, David L., y George F. Jenks. "A GRAPHIC INTERPRETATION OF THE FRICTION OF DISTANCE IN GRAVITY MODELS." Annals of the Association of American Geographers 58, no. 4 (Dec68): 814-825.
Cita MLA (9a ed.)
Huff, David L., y George F. Jenks. "A GRAPHIC INTERPRETATION OF THE FRICTION OF DISTANCE IN GRAVITY MODELS." Annals of the Association of American Geographers, vol. 58, no. 4, Dec68, pp. 814-825.
Precaución: Estas citas no son 100% exactas.