APA Style
      Kirsch, A., Hettlich, F. (2014).
    The Mathematical Theory of Time-Harmonic Maxwell's Equations .
    Springer Cham:
  Springer Cham.
  
MLA Style
      Kirsch, Andreas., Hettlich, Frank.
    "The Mathematical Theory of Time-Harmonic Maxwell's Equations".
    
    Springer Cham:
  Springer Cham,
  2014.
  Text.