TY  - RPRT
TI  - Transtheoretical Model: examining adolescent exercise behavior.
AU  - C R Nigg
AU  - K S Courneya
PY  - 1998
DO  - 10.1016/s1054-139x(97)00141-9
UR  - https://pubmed.ncbi.nlm.nih.gov/9502009/
ID  - 9502009
ER  -