Dyfyniad APA

Birkenhauer, B. (2017). Correspondence (letter to the editor): Amendment Necessary. Dtsch Arztebl Int.

Dyfyniad Arddull Chicago

Birkenhauer, Björn. "Correspondence (letter to the Editor): Amendment Necessary." Dtsch Arztebl Int 2017.

Dyfyniad MLA

Birkenhauer, Björn. "Correspondence (letter to the Editor): Amendment Necessary." Dtsch Arztebl Int 2017.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.