APA
Berg A., Keul J., Stippig J. & Stippig L. (19810623). Effects of an outdoor exercise program on cardiovascular and metabolic data in patients with coronary heart disease (CHD). : International journal of rehabilitation research. Internationale Zeitschrift fur Rehabilitationsforschung. Revue internationale de recherches de readaptation.
Chicago
Berg A, Keul J, Stippig J and Stippig L. 19810623. Effects of an outdoor exercise program on cardiovascular and metabolic data in patients with coronary heart disease (CHD). : International journal of rehabilitation research. Internationale Zeitschrift fur Rehabilitationsforschung. Revue internationale de recherches de readaptation.
Harvard
Berg A., Keul J., Stippig J. and Stippig L. (19810623). Effects of an outdoor exercise program on cardiovascular and metabolic data in patients with coronary heart disease (CHD). : International journal of rehabilitation research. Internationale Zeitschrift fur Rehabilitationsforschung. Revue internationale de recherches de readaptation.
MLA
Berg A, Keul J, Stippig J and Stippig L. Effects of an outdoor exercise program on cardiovascular and metabolic data in patients with coronary heart disease (CHD). : International journal of rehabilitation research. Internationale Zeitschrift fur Rehabilitationsforschung. Revue internationale de recherches de readaptation. 19810623.