APA način citiranja (7. izdanje)
Wiederkehr, P., & Gilbert, R. (2002). Policy instruments for achieving environmentally sustainable transport. OECD.
Čikaški stil citiranja (17. izdanje)
Wiederkehr, Peter, i Richard Gilbert. Policy Instruments for Achieving Environmentally Sustainable Transport. Paris, France: OECD, 2002.
MLA način citiranja (9. izdanje)
Wiederkehr, Peter, i Richard Gilbert. Policy Instruments for Achieving Environmentally Sustainable Transport. OECD, 2002.
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