Phillipson, J. (1967). Eeological energeties.
Chicago Style aipamenaPhillipson, John. Eeological Energeties. 1967.
MLA aipamenaPhillipson, John. Eeological Energeties. 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena