Não informado. (1959). Dental school newsletter. University of Puerto Rico, School of Dentistry.
Chicago-Zitierstil (17. Ausg.)Não informado. Dental School Newsletter. San Juan: University of Puerto Rico, School of Dentistry, 1959.
MLA-Zitierstil (8. Ausg.)Não informado. Dental School Newsletter. University of Puerto Rico, School of Dentistry, 1959.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.