Ballard, D. J., Strogatz, D. S., Wagner, E. H., Siscovick, D. S., James, S. A., Kleinbaum, D. G., … Ibrahim, M. A. (1986). The Edgecombe County High Blood Pressure Control Program: The Process of Medical Care and Blood Pressure Control. American Journal of Preventive Medicine, 12, 278–284.

Ballard, D. J., D. S. Strogatz, E. H. Wagner, D. S. Siscovick, S. A. James, D. G. Kleinbaum, C. A. Williams, L. M. Cutchin, and M. A. Ibrahim. “The Edgecombe County High Blood Pressure Control Program: The Process of Medical Care and Blood Pressure Control.” American Journal of Preventive Medicine 12 (1986): 278–84.

Ballard DJ, Strogatz DS, Wagner EH, Siscovick DS, James SA, Kleinbaum DG, et al. The Edgecombe County High Blood Pressure Control Program: The Process of Medical Care and Blood Pressure Control. American Journal of Preventive Medicine. 1986;12:278–84.

Ballard, D. J., et al. “The Edgecombe County High Blood Pressure Control Program: The Process of Medical Care and Blood Pressure Control.” American Journal of Preventive Medicine, vol. 12, 1986, pp. 278–84.

Ballard DJ, Strogatz DS, Wagner EH, Siscovick DS, James SA, Kleinbaum DG, Williams CA, Cutchin LM, Ibrahim MA. The Edgecombe County High Blood Pressure Control Program: The Process of Medical Care and Blood Pressure Control. American Journal of Preventive Medicine. 1986;12:278–284.