Não informado. (1991). Annual Review of Energy and the Environment. Annual Reviews.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Annual Review of Energy and the Environment. Palo Alto, Calif: Annual Reviews, 1991.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Annual Review of Energy and the Environment. Annual Reviews, 1991.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.