APA (7th ed.) Citation

S, M., KJJ, S., MEMH, W., LRC, D., KMJ, V., SG, O., & JOEH, v. L. (2020). Heart rate variability in hypertensive pregnancy disorders: A systematic review. Pregnancy hypertension, 20, 56. https://doi.org/10.1016/j.preghy.2020.03.003

Chicago Style (17th ed.) Citation

S, Moors, Staaks KJJ, Westerhuis MEMH, Dekker LRC, Verdurmen KMJ, Oei SG, and van Laar JOEH. "Heart Rate Variability in Hypertensive Pregnancy Disorders: A Systematic Review." Pregnancy Hypertension 20 (2020): 56. https://doi.org/10.1016/j.preghy.2020.03.003.

MLA (9th ed.) Citation

S, Moors, et al. "Heart Rate Variability in Hypertensive Pregnancy Disorders: A Systematic Review." Pregnancy Hypertension, vol. 20, 2020, p. 56, https://doi.org/10.1016/j.preghy.2020.03.003.