APA

Rapoport A. M., Meskunas C. A. & Bigal M. E. (20150713). Commentary on Westergaard's "Definitions of medication-overuse headache in population-based studies and their implications on prevalence estimates: A systematic review". : Cephalalgia : an international journal of headache.

Chicago

Rapoport Alan M, Meskunas Chelsea A and Bigal Marcelo E. 20150713. Commentary on Westergaard's "Definitions of medication-overuse headache in population-based studies and their implications on prevalence estimates: A systematic review". : Cephalalgia : an international journal of headache.

Harvard

Rapoport A. M., Meskunas C. A. and Bigal M. E. (20150713). Commentary on Westergaard's "Definitions of medication-overuse headache in population-based studies and their implications on prevalence estimates: A systematic review". : Cephalalgia : an international journal of headache.

MLA

Rapoport Alan M, Meskunas Chelsea A and Bigal Marcelo E. Commentary on Westergaard's "Definitions of medication-overuse headache in population-based studies and their implications on prevalence estimates: A systematic review". : Cephalalgia : an international journal of headache. 20150713.