Dyfyniad APA

WHO. (1993). Environmental health criteria; N.151: Selected synthetic organic fibres. WHO.

Dyfyniad Arddull Chicago

WHO. Environmental Health Criteria; N.151: Selected Synthetic Organic Fibres. WHO, 1993.

Dyfyniad MLA

WHO. Environmental Health Criteria; N.151: Selected Synthetic Organic Fibres. WHO, 1993.

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