United Nations University. (1990). Global Environmental Change. Butterworth Heinemann.
Citação do estilo Chicago (17ª ed.)United Nations University. Global Environmental Change. Guildford, Inglaterra: Butterworth Heinemann, 1990.
Citação MLA (8ª ed.)United Nations University. Global Environmental Change. Butterworth Heinemann, 1990.
警告：这些引文格式不一定是100％准确.