APA citiranje

Le, H., Tfelt-Hansen, P., Skytthe, A., Kyvik, K., & Olesen, J. (2013). The importance of co-morbidity and environmental risk factors for the development of migraine. Springer.

Citação norma Chicago

Le, H., P. Tfelt-Hansen, A. Skytthe, KO Kyvik, and J. Olesen. The Importance of Co-morbidity and Environmental Risk Factors for the Development of Migraine. Springer, 2013.

MLA citiranje

Le, H., et al. The Importance of Co-morbidity and Environmental Risk Factors for the Development of Migraine. Springer, 2013.