Citazione APA

South Africa. Dept. of National Health and Population Development. (1992). Air pollution control in South Africa. Dept. of National Health and Population Development.

Stile di citazione Chicago

South Africa. Dept. of National Health and Population Development. Air Pollution Control in South Africa. Pretoria: Dept. of National Health and Population Development, 1992.

Citazione MLA

South Africa. Dept. of National Health and Population Development. Air Pollution Control in South Africa. Dept. of National Health and Population Development, 1992.