APA

Bishara S. E., Abdalla E. M. & Hoppens B. J. (19900601). Cephalometric comparisons of dentofacial parameters between Egyptian and North American adolescents. : 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

Bishara S E, Abdalla E M and Hoppens B J. 19900601. Cephalometric comparisons of dentofacial parameters between Egyptian and North American adolescents. : 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

Bishara S. E., Abdalla E. M. and Hoppens B. J. (19900601). Cephalometric comparisons of dentofacial parameters between Egyptian and North American adolescents. : 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

Bishara S E, Abdalla E M and Hoppens B J. Cephalometric comparisons of dentofacial parameters between Egyptian and North American adolescents. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 19900601.