APA

Perkins R. A., Staley R. N., . (19930302). Change in lip vermilion height during orthodontic treatment. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

Chicago

Perkins R A, Staley R N, . 19930302. Change in lip vermilion height during orthodontic treatment. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

Harvard

Perkins R. A., Staley R. N., . (19930302). Change in lip vermilion height during orthodontic treatment. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

MLA

Perkins R A, Staley R N, . Change in lip vermilion height during orthodontic treatment. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 19930302.