Παραπομπή σε μορφή APA (7η εκδ.)

Cleary, L. D., & Cummings, J. (1978). Electric utility solar energy activities, 1977 survey. {Special report, February 1978}: EPRI ER-649-SR. Electric Power Research Institute.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cleary, Louise D., και John Cummings. Electric Utility Solar Energy Activities, 1977 Survey. {Special Report, February 1978}: EPRI ER-649-SR. Palo Alto, California: Electric Power Research Institute, 1978.

Παραπομπή σε μορφή MLA (8th εκδ.)

Cleary, Louise D., και John Cummings. Electric Utility Solar Energy Activities, 1977 Survey. {Special Report, February 1978}: EPRI ER-649-SR. Electric Power Research Institute, 1978.