APA استشهاد

(2002). Principles and methods for the assessment of risk from essential trace elements. World Health Organisation.

استشهاد بنمط شيكاغو

Principles and Methods for the Assessment of Risk from Essential Trace Elements. Geneva: World Health Organisation, 2002.

MLA استشهاد

Principles and Methods for the Assessment of Risk from Essential Trace Elements. World Health Organisation, 2002.