World Health Organization. (2005). International travel and health: Situation as on 1 January 2005. World Health Organization.
Цитирование в стиле Чикаго (17-е изд.)World Health Organization. International Travel and Health: Situation as on 1 January 2005. Geneva: World Health Organization, 2005.
Цитирование MLA (9-е изд.)World Health Organization. International Travel and Health: Situation as on 1 January 2005. World Health Organization, 2005.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.