APA aipamena

Ferrante, E. (2015). P040. Primary Valsalva maneuver headache without primary cough headache. J Headache Pain.

Chicago Style aipamena

Ferrante, Enrico. "P040. Primary Valsalva Maneuver Headache Without Primary Cough Headache." J Headache Pain 2015.

MLA aipamena

Ferrante, Enrico. "P040. Primary Valsalva Maneuver Headache Without Primary Cough Headache." J Headache Pain 2015.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.