Angle Orthodontist | E.H Angle Education and Research Foundation. Cambridge University Press.
Citazione stile Chigago Style (17a edizione)Angle Orthodontist | E.H Angle Education and Research Foundation. Cambridge University Press.
Citatione MLA (9a ed.)Angle Orthodontist | E.H Angle Education and Research Foundation. Cambridge University Press.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.