Dyfyniad APA

WHO. (1994). Environmental health criteria; N.152: Polybrominated biphenyls. Geneva: WHO.

Dyfyniad Arddull Chicago

WHO. Environmental Health Criteria; N.152: Polybrominated Biphenyls. Geneva: WHO, 1994.

Dyfyniad MLA

WHO. Environmental Health Criteria; N.152: Polybrominated Biphenyls. Geneva: WHO, 1994.

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