Cita APA

WHO Library Cataloguing in Publication Data. (1990). International travel and health. Geneva, Switzerland: World Health Organization.

Citación estilo Chicago

WHO Library Cataloguing in Publication Data. International Travel and Health. Geneva, Switzerland: World Health Organization, 1990.

Cita MLA

WHO Library Cataloguing in Publication Data. International Travel and Health. Geneva, Switzerland: World Health Organization, 1990.

Precaución: Estas citas no son 100% exactas.