(1998). IPCS: Copper. World Health Organisation.
Čikaški stil citiranjaIPCS: Copper. Geneva: World Health Organisation, 1998.
MLA način citiranjaIPCS: Copper. World Health Organisation, 1998.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.
(1998). IPCS: Copper. World Health Organisation.
Čikaški stil citiranjaIPCS: Copper. Geneva: World Health Organisation, 1998.
MLA način citiranjaIPCS: Copper. World Health Organisation, 1998.