Não informado. (2000). University of California publications in public health. University of California.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. University of California Publications in Public Health. Berkeley, Calif: University of California, 2000.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. University of California Publications in Public Health. University of California, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.