APA (7th ed.) Citation

L, A., MH, S., F, C., & JR, L. (2017). Vitamin D levels in systemic sclerosis patients: A meta-analysis. Drug design, development and therapy, 11, 3119. https://doi.org/10.2147/DDDT.S144860

Chicago Style (17th ed.) Citation

L, An, Sun MH, Chen F, and Li JR. "Vitamin D Levels in Systemic Sclerosis Patients: A Meta-analysis." Drug Design, Development and Therapy 11 (2017): 3119. https://doi.org/10.2147/DDDT.S144860.

MLA (9th ed.) Citation

L, An, et al. "Vitamin D Levels in Systemic Sclerosis Patients: A Meta-analysis." Drug Design, Development and Therapy, vol. 11, 2017, p. 3119, https://doi.org/10.2147/DDDT.S144860.