एपीए उद्धरण

Lombardo, L., Wierusz, W., Toscano, D., Lapenta, R., Kaplan, A., & Siciliani, G. (2013). Frictional resistance exerted by different lingual and labial brackets: An in vitro study. Prog Orthod.

शिकागो स्टाइल उद्धरण

Lombardo, Luca, Weronika Wierusz, Dominique Toscano, Roberto Lapenta, Andrea Kaplan, और Giuseppe Siciliani. "Frictional Resistance Exerted By Different Lingual and Labial Brackets: An in Vitro Study." Prog Orthod 2013.

एमएलए उद्धरण

Lombardo, Luca, et al. "Frictional Resistance Exerted By Different Lingual and Labial Brackets: An in Vitro Study." Prog Orthod 2013.