Elsevier, I.(2011).The American Journal of Orthodontics and Dentofacial Orthopedics Volume 139 No.5 May 2011 (Volume 139 No.5 May 2011).New York. USA:Elsevier Inc.
Gaya MLA
Elsevier, I..The American Journal of Orthodontics and Dentofacial Orthopedics Volume 139 No.5 May 2011.Volume 139 No.5 May 2011New York. USA:Elsevier Inc,2011.Jurnal Internasional.