Rosemary Border. (1998). Factfiles: Recycling. Oxford: Oxford Univ. Press.
Chicago Style aipamenaRosemary Border. Factfiles: Recycling. Oxford: Oxford Univ. Press, 1998.
MLA aipamenaRosemary Border. Factfiles: Recycling. Oxford: Oxford Univ. Press, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.