Koch, G. (1967). Effect of sodium fluoride in dentifrice and mouthwash on incidence of dental caries in schoolchildren. Gleerup.
Lua i Stíl Chicago (17ú heag.)Koch, Göran. Effect of Sodium Fluoride in Dentifrice and Mouthwash on Incidence of Dental Caries in Schoolchildren. Lund: Gleerup, 1967.
Lua MLA (8ú heag.)Koch, Göran. Effect of Sodium Fluoride in Dentifrice and Mouthwash on Incidence of Dental Caries in Schoolchildren. Gleerup, 1967.
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