Guber, S., Montoye, H. J., Cunningham, D. A., & Stephen, D. (1972). Age and physiological adjustment to continous, graded treadmill exercise. The research quarterly of the American Association for Health, Physical Education and Recreation, Washington D.C., 43(2), S. 175-186.

Guber, Sharon, Henry J. Montoye, David A. Cunningham, and Dinka Stephen. "Age and Physiological Adjustment to Continous, Graded Treadmill Exercise." The Research Quarterly of the American Association for Health, Physical Education and Recreation, Washington D.C. 43, no. 2 (1972): S. 175-186.

Guber, Sharon, Henry J. Montoye, David A. Cunningham, and Dinka Stephen. "Age and Physiological Adjustment to Continous, Graded Treadmill Exercise." The Research Quarterly of the American Association for Health, Physical Education and Recreation, Washington D.C. 43.2 (1972): S. 175-186.