APA

Lewis W. F., National Center for Health Statistics (U.S.) & National Hospital Discharge Survey (U.S.). (1981). Average length of stay in short-stay hospitals: demographic, diagnostic, and surgical statistics, United States, 1977. Hyattsville, Md: U.S. Department of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics.

Chicago

Lewis W Frank, National Center for Health Statistics (U.S.) and National Hospital Discharge Survey (U.S.). 1981. Average length of stay in short-stay hospitals: demographic, diagnostic, and surgical statistics, United States, 1977. Hyattsville, Md: U.S. Department of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics.

Harvard

Lewis W. F., National Center for Health Statistics (U.S.) and National Hospital Discharge Survey (U.S.). (1981). Average length of stay in short-stay hospitals: demographic, diagnostic, and surgical statistics, United States, 1977. Hyattsville, Md: U.S. Department of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics.

MLA

Lewis W Frank, National Center for Health Statistics (U.S.) and National Hospital Discharge Survey (U.S.). Average length of stay in short-stay hospitals: demographic, diagnostic, and surgical statistics, United States, 1977. Hyattsville, Md: U.S. Department of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics. 1981.