SUNNY, . et al.
Effects of Bristle Hardness & Duration of Manual Tooth brushing on Plaque Control.
Indian Journal of Community Health, [S.l.], v. 29, n. 1, p. 123 - 128, mar. 2017.
ISSN 2248-9509.
Available at: <http://www.iapsmupuk.org/journal/index.php/IJCH/article/view/1693>. Date accessed: 26 apr. 2018.