Universitas Psychologica Print version ISSN 1657-9267
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DE LA ROCA CHIAPAS, José María et al. Validation of the Questionnaire “Stage of Change in Behavior of Scholars in Eating Habits and Physical Activity” (CEHAF). Univ. Psychol. [online]. 2017, vol.16, n.4, pp.67-75.
ISSN 1657-9267.