Kalff, R., Ewald, C., Waschke, A., Gobisch, L., & Hopf, C. (2013). Degenerative Lumbar Spinal Stenosis in Older People: Current Treatment Options. Deutscher Arzte Verlag.
Citação norma ChicagoKalff, Rolf, Christian Ewald, Albrecht Waschke, Lars Gobisch, and Christof Hopf. Degenerative Lumbar Spinal Stenosis in Older People: Current Treatment Options. Deutscher Arzte Verlag, 2013.
Citação norma MLAKalff, Rolf, et al. Degenerative Lumbar Spinal Stenosis in Older People: Current Treatment Options. Deutscher Arzte Verlag, 2013.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.