Instituto Brasileiro de Informação em Ciência e Tecnologia

Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (2003). Electrical Communication. International Telephone and Telegraph Corporation.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Electrical Communication. New York: International Telephone and Telegraph Corporation, 2003.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Electrical Communication. International Telephone and Telegraph Corporation, 2003.