Hoffmann, W., & Richardson, R. (2014). The economic competitiveness of renewable energy: Pathways to 100% global coverage. Scrivener Publishing : John Wiley & Sons.
Chicago-viite (17. p.)Hoffmann, Winfried, ja Russell Richardson. The Economic Competitiveness of Renewable Energy: Pathways to 100% Global Coverage. Salem, Massachusetts ; Hoboken, New Jersey: Scrivener Publishing : John Wiley & Sons, 2014.
MLA-viite (9. p.)Hoffmann, Winfried, ja Russell Richardson. The Economic Competitiveness of Renewable Energy: Pathways to 100% Global Coverage. Scrivener Publishing : John Wiley & Sons, 2014.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.