APA

Gehring D., Freeseman M., Frazier M. & Southard K. (19980428). Extraction treatment of a Class II, Division 1 malocclusion with anterior open bite with headgear and vertical elastics. : 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

Gehring D, Freeseman M, Frazier M and Southard K. 19980428. Extraction treatment of a Class II, Division 1 malocclusion with anterior open bite with headgear and vertical elastics. : 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

Gehring D., Freeseman M., Frazier M. and Southard K. (19980428). Extraction treatment of a Class II, Division 1 malocclusion with anterior open bite with headgear and vertical elastics. : 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

Gehring D, Freeseman M, Frazier M and Southard K. Extraction treatment of a Class II, Division 1 malocclusion with anterior open bite with headgear and vertical elastics. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 19980428.