APA (7th ed.) Citation

Spasova, V. L., Koleva, L. I., Popova, M. A., Petkova, V. B., & Dimitrov, M. V. (2020). Relationship of maternal vitamin B12 status in pregnancy with preterm birth and maternal health risks.

Chicago Style (17th ed.) Citation

Spasova, V. L., L. I. Koleva, M. A. Popova, V. B. Petkova, and M. V. Dimitrov. Relationship of Maternal Vitamin B12 Status in Pregnancy with Preterm Birth and Maternal Health Risks. 2020.

MLA (8th ed.) Citation

Spasova, V. L., et al. Relationship of Maternal Vitamin B12 Status in Pregnancy with Preterm Birth and Maternal Health Risks. 2020.

Warning: These citations may not always be 100% accurate.