WASET
    H. Al-Khalaifa and  A. Al-Nasser,  Comparison of the Use of Vaccines or Drugs against Parasitic Diseases.   journal   = {International Journal of Medical and Health Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2018, vol. 134(2). 31 - 34
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10008619.