APA način citiranja

Zimmerli, L., Krewer, C., Gassert, R., Müller, F., Riener, R., & Lünenburger, L. (2012). Validation of a mechanism to balance exercise difficulty in robot-assisted upper-extremity rehabilitation after stroke. BioMed Central.

Čikaški stil citiranja

Zimmerli, Lukas, Carmen Krewer, Roger Gassert, Friedemann Müller, Robert Riener, i Lars Lünenburger. Validation of a Mechanism to Balance Exercise Difficulty in Robot-assisted Upper-extremity Rehabilitation After Stroke. BioMed Central, 2012.

MLA način citiranja

Zimmerli, Lukas, et al. Validation of a Mechanism to Balance Exercise Difficulty in Robot-assisted Upper-extremity Rehabilitation After Stroke. BioMed Central, 2012.