WHO. (1993). Environmental health criteria; N.151: Selected synthetic organic fibres. WHO.
استشهاد بنمط شيكاغوWHO. Environmental Health Criteria; N.151: Selected Synthetic Organic Fibres. WHO, 1993.
MLA استشهادWHO. Environmental Health Criteria; N.151: Selected Synthetic Organic Fibres. WHO, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.