Não informado. (1990). Research Journal of the Water Pollution Control Federation. Water Pollution Control Federation.
Čikaški stil citiranja (17. izdanje)Não informado. Research Journal of the Water Pollution Control Federation. Alexandria, Va: Water Pollution Control Federation, 1990.
MLA način citiranja (8. izdanje)Não informado. Research Journal of the Water Pollution Control Federation. Water Pollution Control Federation, 1990.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.