Não informado. (1971). Closed Loop: The magazine of mechanical testing. MTS Systems.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Closed Loop: The Magazine of Mechanical Testing. Minneapolis, Minn: MTS Systems, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Closed Loop: The Magazine of Mechanical Testing. MTS Systems, 1971.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.