PES T&D 2012. IEEE.
Chicago Style aipamenaPES T&D 2012. IEEE.
MLA aipamenaPES T&D 2012. IEEE.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
PES T&D 2012. IEEE.
Chicago Style aipamenaPES T&D 2012. IEEE.
MLA aipamenaPES T&D 2012. IEEE.