APA

Heier E. E., De Smit A. A., Wijgaerts I. A. & Adriaens P. A. (19980129). Periodontal implications of bonded versus removable retainers. : 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

Heier E E, De Smit A A, Wijgaerts I A and Adriaens P A. 19980129. Periodontal implications of bonded versus removable retainers. : 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

Heier E. E., De Smit A. A., Wijgaerts I. A. and Adriaens P. A. (19980129). Periodontal implications of bonded versus removable retainers. : 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

Heier E E, De Smit A A, Wijgaerts I A and Adriaens P A. Periodontal implications of bonded versus removable retainers. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 19980129.