Cita APA (7th ed.)

ebrary, Inc, Dodick, D., Sándor, P. S., & Schoenen, J. (2011). Comorbidity in migraine. Wiley-Blackwell.

Cita Chicago (17th ed.)

ebrary, Inc, David Dodick, Peter S. Sándor, i Jean Schoenen. Comorbidity in Migraine. Chichester, West Sussex, UK: Wiley-Blackwell, 2011.

Cita MLA (9th ed.)

ebrary, Inc, et al. Comorbidity in Migraine. Wiley-Blackwell, 2011.