UNEP Collaborating Centre on Energy and Environment & Edjekumhene, I. (2001). Implementation of renewable energy technologies: Oppurtunities and barriers : Ghana country study. UNEP Collaborating Centre on Energy and Environment, Riso National Laboratory.
Παραπομπή σε μορφή Chicago (17η εκδ.)UNEP Collaborating Centre on Energy and Environment και Ishmael Edjekumhene. Implementation of Renewable Energy Technologies: Oppurtunities and Barriers : Ghana Country Study. Roskilde: UNEP Collaborating Centre on Energy and Environment, Riso National Laboratory, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)UNEP Collaborating Centre on Energy and Environment και Ishmael Edjekumhene. Implementation of Renewable Energy Technologies: Oppurtunities and Barriers : Ghana Country Study. UNEP Collaborating Centre on Energy and Environment, Riso National Laboratory, 2001.