Não informado. (1975). Quarterly progress and status report. Royal Institute of Technology, Department of Speech Communication and Music Accoustics.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Quarterly Progress and Status Report. Stockholm: Royal Institute of Technology, Department of Speech Communication and Music Accoustics, 1975.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Quarterly Progress and Status Report. Royal Institute of Technology, Department of Speech Communication and Music Accoustics, 1975.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.