Cita APA

Cramer, H., Lauche, R., Langhorst, J., Dobos, G. J., & Michalsen, A. (2014). Validation of the German version of the Neck Disability Index (NDI). BioMed Central.

Citación estilo Chicago

Cramer, Holger, Romy Lauche, Jost Langhorst, Gustav J. Dobos, y Andreas Michalsen. Validation of the German Version of the Neck Disability Index (NDI). BioMed Central, 2014.

Cita MLA

Cramer, Holger, et al. Validation of the German Version of the Neck Disability Index (NDI). BioMed Central, 2014.