@article{hacking2008a,
  title = {A framework for clarifying the meaning of Triple Bottom-Line, Integrated, and Sustainability Assessment}
  author = {Hacking, Theo and Guthrie, Peter},
  journal = {Environmental Impact Assessment Review},
  url = {https://linkinghub.elsevier.com/retrieve/pii/S0195925507000297},
  year = {2008}
}