King, A. C., Taylor, C. B., Haskell, W. L., & DeBusk, R. F. (1988). Strategies for increasing early adherence to and long-term maintenance of home-based exercise training in healthy middle-aged men and women. American journal of cardiology, 61(8), S. 628-632.

King, Abby C., C. Barr Taylor, William L. Haskell, and Robert F. DeBusk. "Strategies for Increasing Early Adherence to and Long-term Maintenance of Home-based Exercise Training in Healthy Middle-aged Men and Women." American Journal of Cardiology 61, no. 8 (1988): S. 628-632.

King, Abby C., C. Barr Taylor, William L. Haskell, and Robert F. DeBusk. "Strategies for Increasing Early Adherence to and Long-term Maintenance of Home-based Exercise Training in Healthy Middle-aged Men and Women." American Journal of Cardiology 61.8 (1988): S. 628-632.