Παραπομπή σε μορφή APA (7η εκδ.)

United Nations Environment Programme. Industry & Environment Office. (1993). Environmental management of nickel production: A technical guide. United Nations Environment Programme, Industry and Environment, Programme Activity Centre.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United Nations Environment Programme. Industry & Environment Office. Environmental Management of Nickel Production: A Technical Guide. Paris: United Nations Environment Programme, Industry and Environment, Programme Activity Centre, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

United Nations Environment Programme. Industry & Environment Office. Environmental Management of Nickel Production: A Technical Guide. United Nations Environment Programme, Industry and Environment, Programme Activity Centre, 1993.