Gaya APA
      L.Wheelen, T., Hunger, J, D. (2006).
    Strategic Management and Business Policy (Tenth Edition).
    New Jersey:
  Pearson Prentice Hall.
  
Gaya MLA
      L.Wheelen, Thomas., Hunger, J., David.
    "Strategic Management and Business Policy".
    Tenth Edition
    New Jersey:
  Pearson Prentice Hall,
  2006.
  Text.