Fowler , J. M. (1975). Energy and the environment. McGraw - hill book company.
Chicago Style aipamenaFowler , John M. Energy and the Environment. New York: McGraw - hill book company, 1975.
MLA aipamenaFowler , John M. Energy and the Environment. McGraw - hill book company, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.