APA (7th ed.) Citation

National Center for Health Statistics (U.S.). (1972). Periodontal disease and oral hygiene among children, United States: Estimates of the periodontal index (PI) and the simplified oral hygiene index (OHI-S) for noninstitutionalized children aged 6-11 years in the United States, by age, sex, race, family income, education of the head of household, and geographic region, and a correlation analysis of the interrelation of the PI, OHI-S, and selected demographic characteristics. For sale by the Supt. of Docs., U. S. Govt. Print. Off..

Chicago Style (17th ed.) Citation

National Center for Health Statistics (U.S.). Periodontal Disease and Oral Hygiene Among Children, United States: Estimates of the Periodontal Index (PI) and the Simplified Oral Hygiene Index (OHI-S) for Noninstitutionalized Children Aged 6-11 Years in the United States, by Age, Sex, Race, Family Income, Education of the Head of Household, and Geographic Region, and a Correlation Analysis of the Interrelation of the PI, OHI-S, and Selected Demographic Characteristics. Rockville, USA: For sale by the Supt. of Docs., U. S. Govt. Print. Off., 1972.

MLA (9th ed.) Citation

National Center for Health Statistics (U.S.). Periodontal Disease and Oral Hygiene Among Children, United States: Estimates of the Periodontal Index (PI) and the Simplified Oral Hygiene Index (OHI-S) for Noninstitutionalized Children Aged 6-11 Years in the United States, by Age, Sex, Race, Family Income, Education of the Head of Household, and Geographic Region, and a Correlation Analysis of the Interrelation of the PI, OHI-S, and Selected Demographic Characteristics. For sale by the Supt. of Docs., U. S. Govt. Print. Off., 1972.