Griggs, G. B. (1977). The earth and land use planning. Duxbury.
Citación estilo ChicagoGriggs, Gary B. The Earth and Land Use Planning. North Scituate: Duxbury, 1977.
Cita MLAGriggs, Gary B. The Earth and Land Use Planning. Duxbury, 1977.
Warning: These citations may not always be 100% accurate.