National Center for Health Statistics (U.S.) & McDowell, A. (1981). Plan and operation of the second national Health and nutrition examination survey, 1976-1980. U.S. Dept. of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics ; For sale by the Supt. of Docs., U.S. Govt. Print. Off..
芝加哥风格引文National Center for Health Statistics (U.S.) 与 Arthur McDowell. Plan and Operation of the Second National Health and Nutrition Examination Survey, 1976-1980. Hyattsville, Md. : [Washington]: U.S. Dept. of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics ; For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1981.
MLA引文National Center for Health Statistics (U.S.) 与 Arthur McDowell. Plan and Operation of the Second National Health and Nutrition Examination Survey, 1976-1980. U.S. Dept. of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics ; For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1981.