Indian Council of Agricultural Research. National Bureau of Soil Survey and Land Use Planning. Regional Centre, Delhi. (1981). Soil survey and land use plan of Patiala District, Punjab. National Bureau of Soil Survey and Land Use Planning, Indian Council of Agricultural Research.
Chicagoスタイル(17版)引用形式Indian Council of Agricultural Research. National Bureau of Soil Survey and Land Use Planning. Regional Centre, Delhi. Soil Survey and Land Use Plan of Patiala District, Punjab. Nagpur: National Bureau of Soil Survey and Land Use Planning, Indian Council of Agricultural Research, 1981.
MLA(8版)引用形式Indian Council of Agricultural Research. National Bureau of Soil Survey and Land Use Planning. Regional Centre, Delhi. Soil Survey and Land Use Plan of Patiala District, Punjab. National Bureau of Soil Survey and Land Use Planning, Indian Council of Agricultural Research, 1981.