APA Style
      Merkouris, P. et al (2022).
    The Theory, Practice, and Interpretation of Customary International Law .
    Cambridge:
  Cambridge University Press.
  
MLA Style
      Merkouris, Panos. et al.
    "The Theory, Practice, and Interpretation of Customary International Law".
    
    Cambridge:
  Cambridge University Press,
  2022.
  Text.