APA(7版)引用形式
Global Environmental Monitoring System. (1991). Urban air pollution. United nations environment health.
Chicagoスタイル(17版)引用形式
Global Environmental Monitoring System. Urban Air Pollution. Nairobi: United nations environment health, 1991.
MLA(9版)引用形式
Global Environmental Monitoring System. Urban Air Pollution. United nations environment health, 1991.
警告: この引用は必ずしも正確ではありません.