Conference on Environmental Management in Developing Countries : Paris & Erocal, D. (1991). Environmental management in developing countries =: Gestion del'environmental dans les pays en developpement. Development Centre of the Organisation for Economic Co-operation and Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Conference on Environmental Management in Developing Countries : Paris και Denizhan Erocal. Environmental Management in Developing Countries =: Gestion Del'environmental Dans Les Pays En Developpement. Paris: Development Centre of the Organisation for Economic Co-operation and Development, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Conference on Environmental Management in Developing Countries : Paris και Denizhan Erocal. Environmental Management in Developing Countries =: Gestion Del'environmental Dans Les Pays En Developpement. Development Centre of the Organisation for Economic Co-operation and Development, 1991.