Williams, R. S., Wallace, A. G., Hindman, M. C., Califf, R., Blumenthal, J. A., Koisch, F., … James, J. (1982). Duke University's Preventive Approach to Cardiology - DUPAC. Journal of Cardiac Rehabilitation, 2, 509–514.

Williams, R. S., A. G. Wallace, M. C. Hindman, R. Califf, J. A. Blumenthal, F. Koisch, M. Morey, et al. “Duke University's Preventive Approach to Cardiology - DUPAC.” Journal of Cardiac Rehabilitation 2 (1982): 509–14.

Williams RS, Wallace AG, Hindman MC, Califf R, Blumenthal JA, Koisch F, et al. Duke University's Preventive Approach to Cardiology - DUPAC. Journal of Cardiac Rehabilitation. 1982;2:509–14.

Williams, R. S., et al. “Duke University's Preventive Approach to Cardiology - DUPAC.” Journal of Cardiac Rehabilitation, vol. 2, 1982, pp. 509–14.

Williams RS, Wallace AG, Hindman MC, Califf R, Blumenthal JA, Koisch F, Morey M, Wagner E, Mau H, Williams J, Roads MK, Erickson P, Leckie D, James J. Duke University's Preventive Approach to Cardiology - DUPAC. Journal of Cardiac Rehabilitation. 1982;2:509–514.