ГОСТ:
Smirnova A. et al. Clinical and immunological risk factors for very early premature birth //Russian Journal of Human Reproduction. — 2020. — T.26. —№. 2 —C. 113-113
MLA:
Smirnova, Anna, et al. "Clinical and immunological risk factors for very early premature birth" Russian Journal of Human Reproduction 26.2 (2020): 113-113