Não informado. (1970). IEEE Publications Bulletin. Institute of Electrical and Electronics Engineers.
Chicago (17e ed.) BronvermeldingNão informado. IEEE Publications Bulletin. New York: Institute of Electrical and Electronics Engineers, 1970.
MLA (8e ed.) BronvermeldingNão informado. IEEE Publications Bulletin. Institute of Electrical and Electronics Engineers, 1970.
Let op: Deze citaties zijn niet altijd 100% accuraat.