WHO. (1989). Environmental health criteria; N.89: Formaldehyde. Geneva: WHO.
シカゴスタイル引用形WHO. Environmental Health Criteria; N.89: Formaldehyde. Geneva: WHO, 1989.
MLA引用形式WHO. Environmental Health Criteria; N.89: Formaldehyde. Geneva: WHO, 1989.
警告: この引用は必ずしも正確ではありません.