Gossec, L., Smolen, J. S., Gaujoux-Viala, C., Ash, Z., Marzo-Ortega, H., van der Heijde, D., FitzGerald, O., Aletaha, D., Balint, P., Boumpas, D., Braun, J., Breedveld, F. C., Burmester, G., Cañete, J. D., de Wit, M., Dagfinrud, H., de Vlam, K., Dougados, M., Helliwell, P., Kavanaugh, A., Kvien, T. K., Landewé, R., Luger, T., Maccarone, M., McGonagle, D., McHugh, N., McInnes, I. B., Ritchlin, C., Sieper, J., Tak, P. P., Valesini, G., Vencovsky, J., Winthrop, K. L., Zink, A., & Emery, P. (2012). european League Against Rheumatism recommendations for the management of psoriatic arthritis with pharmacological therapies. Annals of the rheumatic diseases, 71(1), 4–12. http://access.bl.uk/ark:/81055/vdc_100135178326.0x000063