Cita APA

Usherwood, T. (1989). INTERNATIONAL TRAVEL AND HEALTH: Vaccination requirements and health advice.

Chicago Style Citation

Usherwood, Tim. INTERNATIONAL TRAVEL AND HEALTH: Vaccination Requirements and Health Advice. 1989.

Cita MLA

Usherwood, Tim. INTERNATIONAL TRAVEL AND HEALTH: Vaccination Requirements and Health Advice. 1989.

Atenció: Aquestes cites poden no estar 100% correctes.