WASET
    Diego Renan G. Tudela and  Veruska C. Dutra and  Mary Lucia Gomes Silveira de Senna and  Afonso R. Aquino,  The Importance of Conserving Pre-Historical, Historical and Cultural Heritage and Its Tourist Exploitation.   journal   = {International Journal of Social and Business Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2019, vol. 150(6). 850 - 856
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10010467.