Παραπομπή σε μορφή APA (7η εκδ.)

Tillett, W., Orbai, A., Ogdie, A., Leung, Y., Strand, V., Gladman, D., . . . Coates, L. (2017). GRAPPA-OMERACT initiative to standardise outcomes in psoriatic arthritis clinical trials and longitudinal observational studies. BMJ Publishing Group.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tillett, W., A. Orbai, A. Ogdie, Y. Leung, V. Strand, D. Gladman, P. Mease, και L. Coates. GRAPPA-OMERACT Initiative to Standardise Outcomes in Psoriatic Arthritis Clinical Trials and Longitudinal Observational Studies. BMJ Publishing Group, 2017.

Παραπομπή σε μορφή MLA (9th εκδ.)

Tillett, W., et al. GRAPPA-OMERACT Initiative to Standardise Outcomes in Psoriatic Arthritis Clinical Trials and Longitudinal Observational Studies. BMJ Publishing Group, 2017.