APA

United Nations Environment Programme (New York). Industry & Environment Office, .Environmental guidelines for the motor vehicle and its use. s.l: UNEP.

Chicago

United Nations Environment Programme (New York). Industry & Environment Office, .Environmental guidelines for the motor vehicle and its use. s.l: UNEP.

Harvard

United Nations Environment Programme (New York). Industry & Environment Office, .Environmental guidelines for the motor vehicle and its use. s.l: UNEP.

MLA

United Nations Environment Programme (New York). Industry & Environment Office, .s.l: UNEP. .