Não informado. (1970). IEEE Publications Bulletin. Institute of Electrical and Electronics Engineers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. IEEE Publications Bulletin. New York: Institute of Electrical and Electronics Engineers, 1970.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. IEEE Publications Bulletin. Institute of Electrical and Electronics Engineers, 1970.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.