Gaya APA
Welbury, D, M, &, R. (2000).
Orthodontics and Paediatric Dentistry .
Toronto:
Churchill Livingstone.
Gaya MLA
Welbury, Declan, Millett, &, Richard.
"Orthodontics and Paediatric Dentistry".
Toronto:
Churchill Livingstone,
2000.
Koleksi Elektronik.