APA Style
      KOTLER, PHILIP. (2021).
    PRINCIPLES OF MARKETING. Eighteenth Edition .
    UNITED KINGDOM:
  PEARSON EDUCATION INTERNATIONAL.
  
Chicago Style
      KOTLER, PHILIP.
    PRINCIPLES OF MARKETING. Eighteenth Edition.
    
    UNITED KINGDOM:
  PEARSON EDUCATION INTERNATIONAL,
  2021.
  Text.
  
MLA Style
      KOTLER, PHILIP.
    PRINCIPLES OF MARKETING. Eighteenth Edition.
    
    UNITED KINGDOM:
  PEARSON EDUCATION INTERNATIONAL,
  2021.
  Text.
  
Turabian Style
      KOTLER, PHILIP.
    PRINCIPLES OF MARKETING. Eighteenth Edition.
     
    UNITED KINGDOM:
  PEARSON EDUCATION INTERNATIONAL,
  2021.
  Print.