APA
Drager N., Vieira C., . (2002). Trade in health services : global, regional and country perspectives. Washington: Pan American Health Organization.
Chicago
Drager Nick, Vieira César, . 2002. Trade in health services : global, regional and country perspectives. Washington: Pan American Health Organization.
Harvard
Drager N., Vieira C., . (2002). Trade in health services : global, regional and country perspectives. Washington: Pan American Health Organization.
MLA
Drager Nick, Vieira César, . Trade in health services : global, regional and country perspectives. Washington: Pan American Health Organization. 2002.