Gaya APA
      Montgomery, D, C., Runger, G, C. (2014).
    Applied Statistics and Probability for Engineers (6th ed.).
    New York:
  John Wiley & Sons, Inc.
  
Gaya MLA
      Montgomery, Douglas, C.., Runger, George, C..
    "Applied Statistics and Probability for Engineers".
    6th ed.
    New York:
  John Wiley & Sons, Inc,
  2014.
  e-book.