André M. Senna and  Mary L. G. S. Senna and  Rosa M. Machado-de-Sena,  Knowledge and Attitude: Challenges for Continuing Education in Health.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2016, vol. 120(12). 3863 - 3866
    [viewed 20 October 2019]. Available from: https://publications.waset.org/pdf/10005873.