APA (7th ed.) Zitazioa
ebrary, Inc, & Cateland, R. P. (2009). Energy efficiency solutions. Nova Science Publishers.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Richard P. Cateland. Energy Efficiency Solutions. New York: Nova Science Publishers, 2009.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Richard P. Cateland. Energy Efficiency Solutions. Nova Science Publishers, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.