Não informado. (1899). Dental century of the northwest. [s.n.].
Chicago (17e ed.) BronvermeldingNão informado. Dental Century of the Northwest. Madison, Wis: [s.n.], 1899.
MLA (8e ed.) BronvermeldingNão informado. Dental Century of the Northwest. [s.n.], 1899.
Let op: Deze citaties zijn niet altijd 100% accuraat.