APA

National Institutes of Health (U.S.), . (1972). Everybody's doing it, flossing and brushing, better ask your dentist how. [Washington, D.C: .

Chicago

National Institutes of Health (U.S.), . 1972. Everybody's doing it, flossing and brushing, better ask your dentist how. [Washington, D.C: .

Harvard

National Institutes of Health (U.S.), . (1972). Everybody's doing it, flossing and brushing, better ask your dentist how. [Washington, D.C: .

MLA

National Institutes of Health (U.S.), . Everybody's doing it, flossing and brushing, better ask your dentist how. [Washington, D.C: . 1972.