Dyfyniad APA
Petersen, C., & Ure, B. (2017). Thoracic surgery in children and adolescents. De Gruyter.
Dyfyniad Arddull Chicago
Petersen, Claus, and B. Ure. Thoracic Surgery in Children and Adolescents. Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter, 2017.
Dyfyniad MLA
Petersen, Claus, and B. Ure. Thoracic Surgery in Children and Adolescents. De Gruyter, 2017.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.