United States. Soil Conservation Service & Water Resources Publications (Firm). (1980). Field density and moisture content test: Nuclear gauge method. Water Resources Publications.
芝加哥风格引文United States. Soil Conservation Service 与 Water Resources Publications (Firm). Field Density and Moisture Content Test: Nuclear Gauge Method. Littleton, Colo.: Water Resources Publications, 1980.
MLA引文United States. Soil Conservation Service 与 Water Resources Publications (Firm). Field Density and Moisture Content Test: Nuclear Gauge Method. Water Resources Publications, 1980.
警告：这些引文格式不一定是100％准确.