Dyfyniad APA

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

Dyfyniad Arddull 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.

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.