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APA Citation
Bettini Phonograph Laboratory. A true mirror of sound . New York: Bettini Phonograph Laboratory. Retrieved from 10.5479/sil.456915.39088007544364
MLA Citation
Bettini Phonograph Laboratory. A true mirror of sound . , New York: Bettini Phonograph Laboratory, 10.5479/sil.456915.39088007544364
Chicago
Bettini Phonograph Laboratory. A true mirror of sound . New York: Bettini Phonograph Laboratory, doi: 10.5479/sil.456915.39088007544364