WASET
     G. Gradinaru and  S. Olteanu,  The Recreation Technique Model from the Perspective of Environmental Quality Elements.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2009, vol. 25(1). 128 - 131
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/12505.