Gaya APA
      Camilleri, M, A. (2018).
    Travel marketing, rourism economics and the airline product : an introduction to theory and practice .
    Switzerland:
  Springer International Publishing AG.
  
Gaya MLA
      Camilleri, Mark, Anthony.
    "Travel marketing, rourism economics and the airline product : an introduction to theory and practice".
    
    Switzerland:
  Springer International Publishing AG,
  2018.
  e-book.