APA Style
      GRIFFITHS, D, F. et al (2015).
    Essential Partial Differential Equations
Analytical and Computational Aspects .
    :
  .
  
MLA Style
      GRIFFITHS, David, F.. et al.
    "Essential Partial Differential Equations
Analytical and Computational Aspects".
    
    :
  ,
  2015.
  Text.