APA
Machen D. E., . (19910815). Legal aspects of orthodontic practice: risk management concepts. Oral hygiene assessment: plaque accumulation, gingival inflammation, decalcification, and caries. : 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
Machen D E, . 19910815. Legal aspects of orthodontic practice: risk management concepts. Oral hygiene assessment: plaque accumulation, gingival inflammation, decalcification, and caries. : 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
Machen D. E., . (19910815). Legal aspects of orthodontic practice: risk management concepts. Oral hygiene assessment: plaque accumulation, gingival inflammation, decalcification, and caries. : 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
Machen D E, . Legal aspects of orthodontic practice: risk management concepts. Oral hygiene assessment: plaque accumulation, gingival inflammation, decalcification, and caries. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 19910815.