Instituto Brasileiro de Informação em Ciência e Tecnologia

Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1930). National Institute of Health bulletin. U.S. Public Health Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. National Institute of Health Bulletin. Washington: U.S. Public Health Service, 1930.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. National Institute of Health Bulletin. U.S. Public Health Service, 1930.