Lua APA (7ú heag.)

(1984). Environmental guidelines for the diesel vehicle. Industry & Environment Office, United NationsEnvironment Programme.

Lua i Stíl Chicago (17ú heag.)

Environmental Guidelines for the Diesel Vehicle. [Paris?]: Industry & Environment Office, United NationsEnvironment Programme, 1984.

Lua MLA (9ú heag.)

Environmental Guidelines for the Diesel Vehicle. Industry & Environment Office, United NationsEnvironment Programme, 1984.

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