APA (7th ed.) Citation

Norman, J. E., Marlow, N., Messow, C., Shennan, A., Bennett, P. R., Thornton, S., . . . Norrie, J. (2018). Does progesterone prophylaxis to prevent preterm labour improve outcome? A randomised double-blind placebo-controlled trial (OPPTIMUM). Health technology assessment (Winchester, England), 22(35), 1-304. https://doi.org/10.3310/hta22350

Chicago Style (17th ed.) Citation

Norman, Jane E., et al. "Does Progesterone Prophylaxis to Prevent Preterm Labour Improve Outcome? A Randomised Double-blind Placebo-controlled Trial (OPPTIMUM)." Health Technology Assessment (Winchester, England) 22, no. 35 (2018): 1-304. https://doi.org/10.3310/hta22350.

MLA (9th ed.) Citation

Norman, Jane E., et al. "Does Progesterone Prophylaxis to Prevent Preterm Labour Improve Outcome? A Randomised Double-blind Placebo-controlled Trial (OPPTIMUM)." Health Technology Assessment (Winchester, England), vol. 22, no. 35, 2018, pp. 1-304, https://doi.org/10.3310/hta22350.