Griggs, G. B. (1977). The earth and land use planning. Duxbury.
Chicagoスタイル(17版)引用形式Griggs, Gary B. The Earth and Land Use Planning. North Scituate: Duxbury, 1977.
MLA(9版)引用形式Griggs, Gary B. The Earth and Land Use Planning. Duxbury, 1977.
警告: この引用は必ずしも正確ではありません.