Gregory, D. (1989). Horizons in human geography. Macmillan.
Citación estilo ChicagoGregory, Derek. Horizons in Human Geography. London: Macmillan, 1989.
Cita MLAGregory, Derek. Horizons in Human Geography. Macmillan, 1989.
Warning: These citations may not always be 100% accurate.