Παραπομπή σε μορφή APA (7η εκδ.)

Energy Systems International & U.S. Department of Energy. (1978). Solar energy commercialization for European countries. U.S. Department of Energy.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Energy Systems International και U.S. Department of Energy. Solar Energy Commercialization for European Countries. Virginia: U.S. Department of Energy, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Energy Systems International και U.S. Department of Energy. Solar Energy Commercialization for European Countries. U.S. Department of Energy, 1978.