APA (7th ed.) Citation

DF, S., PJ, A., PA, J., JM, W., & JD, M. (1999). Predicting survival using simple clinical variables: A case study in traumatic brain injury. Journal of neurology, neurosurgery, and psychiatry, 66(1), 20. https://doi.org/10.1136/jnnp.66.1.20

Chicago Style (17th ed.) Citation

DF, Signorini, Andrews PJ, Jones PA, Wardlaw JM, and Miller JD. "Predicting Survival Using Simple Clinical Variables: A Case Study in Traumatic Brain Injury." Journal of Neurology, Neurosurgery, and Psychiatry 66, no. 1 (1999): 20. https://doi.org/10.1136/jnnp.66.1.20.

MLA (9th ed.) Citation

DF, Signorini, et al. "Predicting Survival Using Simple Clinical Variables: A Case Study in Traumatic Brain Injury." Journal of Neurology, Neurosurgery, and Psychiatry, vol. 66, no. 1, 1999, p. 20, https://doi.org/10.1136/jnnp.66.1.20.