Griggs, G. B. (1977). The earth and land use planning. Duxbury Press.
芝加哥风格引文Griggs, Gary B. The Earth and Land Use Planning. Massachusetts: Duxbury Press, 1977.
MLA引文Griggs, Gary B. The Earth and Land Use Planning. Duxbury Press, 1977.
警告：这些引文格式不一定是100％准确.