APA Style
      Calder, Alan, Watkins, Steve. (2005).
    IT governance: a manager's guide to data security and ISO 27001/ISO 27002 (4).
    London:
  Kogan Page Limited.
  
Chicago Style
      Calder, Alan, Watkins, Steve.
    IT governance: a manager's guide to data security and ISO 27001/ISO 27002.
    4
    London:
  Kogan Page Limited,
  2005.
  E-Book Teknik Informatika.
  
MLA Style
      Calder, Alan, Watkins, Steve.
    IT governance: a manager's guide to data security and ISO 27001/ISO 27002.
    4
    London:
  Kogan Page Limited,
  2005.
  E-Book Teknik Informatika.
  
Turabian Style
      Calder, Alan, Watkins, Steve.
    IT governance: a manager's guide to data security and ISO 27001/ISO 27002.
    4 
    London:
  Kogan Page Limited,
  2005.
  E-Book Teknik Informatika.