Dyfyniad APA

South Africa. Dept. of Health. (1978). Dust prevention. Dept. of Health.

Dyfyniad Arddull Chicago

South Africa. Dept. of Health. Dust Prevention. Pretoria: Dept. of Health, 1978.

Dyfyniad MLA

South Africa. Dept. of Health. Dust Prevention. Dept. of Health, 1978.

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