Não informado. (2007). Report of the director. University of Puerto Rico, School of Tropical Medicine.
Chicago-Zitierstil (17. Ausg.)Não informado. Report of the Director. San Juan: University of Puerto Rico, School of Tropical Medicine, 2007.
MLA-Zitierstil (8. Ausg.)Não informado. Report of the Director. University of Puerto Rico, School of Tropical Medicine, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.