Цитирование APA (7-е изд.)
World Health Organization & ebrary, Inc. (2009). International travel and health: Situation as on 1 January 2009. World Health Organization.
Цитирование в стиле Чикаго (17-е изд.)
World Health Organization и Inc ebrary. International Travel and Health: Situation as on 1 January 2009. Geneva: World Health Organization, 2009.
Цитирование MLA (9-е изд.)
World Health Organization и Inc ebrary. International Travel and Health: Situation as on 1 January 2009. World Health Organization, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.