APA

Shearn B. N., Woods M. G., . (20000411). An occlusal and cephalometric analysis of lower first and second premolar extraction effects. : 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

Shearn B N, Woods M G, . 20000411. An occlusal and cephalometric analysis of lower first and second premolar extraction effects. : 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

Shearn B. N., Woods M. G., . (20000411). An occlusal and cephalometric analysis of lower first and second premolar extraction effects. : 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

Shearn B N, Woods M G, . An occlusal and cephalometric analysis of lower first and second premolar extraction effects. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 20000411.