World Health Organization & World Health Organization. (1998). Regulatory Situation of Herbal Medicines. World Health organization.
Цитирование в стиле Чикаго (17-е изд.)World Health Organization и World Health Organization. Regulatory Situation of Herbal Medicines. Geneva: World Health organization, 1998.
Цитирование MLA (8-е изд.)World Health Organization и World Health Organization. Regulatory Situation of Herbal Medicines. World Health organization, 1998.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.