Dyfyniad APA

World Health Organization. (1991). Research abstracts: South-East Asia region. WHO.

Dyfyniad Arddull Chicago

World Health Organization. Research Abstracts: South-East Asia Region. New Delhi: WHO, 1991.

Dyfyniad MLA

World Health Organization. Research Abstracts: South-East Asia Region. WHO, 1991.

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