Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Giamberardino, M. A., & Martelletti, P. (2017). Comorbidities in Headache Disorders. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Maria Adele Giamberardino, και Paolo Martelletti. Comorbidities in Headache Disorders. Cham: Springer International Publishing : Imprint: Springer, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Comorbidities in Headache Disorders. Springer International Publishing : Imprint: Springer, 2017.