Hardman, D. J., McEldowney, S., & Waite, S. (1994). Pollution: Ecology and biotreatment.
Chicago Style aipamenaHardman, David J., Sharron McEldowney, and Stephen Waite. Pollution: Ecology and Biotreatment. London, Longman Scientific & Technical, 1994.
MLA aipamenaHardman, David J., et al. Pollution: Ecology and Biotreatment. 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.