APA

Blumenfeld A., Ashkenazi A., Grosberg B., Napchan U., Narouze S., Nett B., DePalma T., Rosenthal B., Tepper S. & Lipton R. B. (20101008). Patterns of use of peripheral nerve blocks and trigger point injections among headache practitioners in the USA: Results of the American Headache Society Interventional Procedure Survey (AHS-IPS). : Headache.

Chicago

Blumenfeld Andrew, Ashkenazi Avi, Grosberg Brian, Napchan Uri, Narouze Samer, Nett Bob, DePalma Traci, Rosenthal Barbara, Tepper Stewart and Lipton Richard B. 20101008. Patterns of use of peripheral nerve blocks and trigger point injections among headache practitioners in the USA: Results of the American Headache Society Interventional Procedure Survey (AHS-IPS). : Headache.

Harvard

Blumenfeld A., Ashkenazi A., Grosberg B., Napchan U., Narouze S., Nett B., DePalma T., Rosenthal B., Tepper S. and Lipton R. B. (20101008). Patterns of use of peripheral nerve blocks and trigger point injections among headache practitioners in the USA: Results of the American Headache Society Interventional Procedure Survey (AHS-IPS). : Headache.

MLA

Blumenfeld Andrew, Ashkenazi Avi, Grosberg Brian, Napchan Uri, Narouze Samer, Nett Bob, DePalma Traci, Rosenthal Barbara, Tepper Stewart and Lipton Richard B. Patterns of use of peripheral nerve blocks and trigger point injections among headache practitioners in the USA: Results of the American Headache Society Interventional Procedure Survey (AHS-IPS). : Headache. 20101008.