Keller, A. C. (1937). Direct recording and reproducing materials for disk recording. Bell telephone system B-998.
Chicago-стиль цитированияKeller, A. C. "Direct Recording and Reproducing Materials for Disk Recording." Bell Telephone System B-998 1937.
MLA-цитированиеKeller, A. C. "Direct Recording and Reproducing Materials for Disk Recording." Bell Telephone System B-998 1937.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.