APA-Zitierstil (7. Ausg.)

Petzke, F., Bock, F., Hüppe, M., Nothacker, M. J., Norda, H., Radbruch, L., . . . Häuser, W. (2020). Long-term opioid therapy for chronic noncancer pain: Second update of the German guidelines. Pain reports, 5(5), . https://doi.org/10.1097/PR9.0000000000000840

Chicago-Zitierstil (17. Ausg.)

Petzke, Frank, et al. "Long-term Opioid Therapy for Chronic Noncancer Pain: Second Update of the German Guidelines." Pain Reports 5, no. 5 (2020). https://doi.org/10.1097/PR9.0000000000000840.

MLA-Zitierstil (9. Ausg.)

Petzke, Frank, et al. "Long-term Opioid Therapy for Chronic Noncancer Pain: Second Update of the German Guidelines." Pain Reports, vol. 5, no. 5, 2020, https://doi.org/10.1097/PR9.0000000000000840.