APA

National Institutes of Health (U.S.), . (1970). Dental flossophy. [Washington, D.C: .

Chicago

National Institutes of Health (U.S.), . 1970. Dental flossophy. [Washington, D.C: .

Harvard

National Institutes of Health (U.S.), . (1970). Dental flossophy. [Washington, D.C: .

MLA

National Institutes of Health (U.S.), . Dental flossophy. [Washington, D.C: . 1970.