APA

Sheftell F. D., Tepper S. J., Lay C. L. & Bigal M. E. (20070810). Post-traumatic headache: emphasis on chronic types following mild closed head injury. : Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology.

Chicago

Sheftell F D, Tepper S J, Lay C L and Bigal M E. 20070810. Post-traumatic headache: emphasis on chronic types following mild closed head injury. : Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology.

Harvard

Sheftell F. D., Tepper S. J., Lay C. L. and Bigal M. E. (20070810). Post-traumatic headache: emphasis on chronic types following mild closed head injury. : Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology.

MLA

Sheftell F D, Tepper S J, Lay C L and Bigal M E. Post-traumatic headache: emphasis on chronic types following mild closed head injury. : Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology. 20070810.