Παραπομπή σε μορφή APA (7η εκδ.)

Organisation for Economic Co-operation and Development Group on Urban Affairs. (1990). Environmental policies for cities in the 1990s. Organisation for Economic Co-operation and Development, OECD Publications and Information Centre [distributor].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Organisation for Economic Co-operation and Development Group on Urban Affairs. Environmental Policies for Cities in the 1990s. Paris : Washington, D.C.: Organisation for Economic Co-operation and Development, OECD Publications and Information Centre [distributor], 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Organisation for Economic Co-operation and Development Group on Urban Affairs. Environmental Policies for Cities in the 1990s. Organisation for Economic Co-operation and Development, OECD Publications and Information Centre [distributor], 1990.

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