APA Style
      Ockenfels, A. et al (2017).
    Global Carbon PricingThe Path to Climate Cooperation  .
    Cambridge, MA ::
  MIT Press,.
  
MLA Style
      Ockenfels, Axel,. et al.
    "Global Carbon PricingThe Path to Climate Cooperation ".
    
    Cambridge, MA ::
  MIT Press,,
  2017.
  .