Gaya APA
      Berk, J., DeMarzo, P. (2017).
    Corporate Finance Global Ed. (E-Book) (4th ed.).
    England:
  Pearson Education Limited.
  
Gaya MLA
      Berk, Jonathan., DeMarzo, Peter.
    "Corporate Finance Global Ed. (E-Book)".
    4th ed.
    England:
  Pearson Education Limited,
  2017.
  Electronic Resources.