Gaya APA
      Boella, M. (2005).
    Human resource management in the hospitality industry: a introductory guide (-).
    Amsterdam:
  Elsevier.
  
Gaya MLA
      Boella, Michael.
    "Human resource management in the hospitality industry: a introductory guide".
    -
    Amsterdam:
  Elsevier,
  2005.
  Buku PPS Manajemen.