APA citiranje

Schaefer, C., & Koch, K. (2012). Correspondence (letter to the editor): Finding Information by Quality Providers Is an Issue. Deutscher Arzte Verlag.

Citação norma Chicago

Schaefer, Corinna, and Klaus Koch. Correspondence (letter to the Editor): Finding Information By Quality Providers Is an Issue. Deutscher Arzte Verlag, 2012.

MLA citiranje

Schaefer, Corinna, and Klaus Koch. Correspondence (letter to the Editor): Finding Information By Quality Providers Is an Issue. Deutscher Arzte Verlag, 2012.