APA-referens (7:e uppl.)

Não informado. (1973). Noise Control Engineering. Institute of Noise Control Engineering.

Chicago-referens (17:e uppl.)

Não informado. Noise Control Engineering. Bedford, Mass: Institute of Noise Control Engineering, 1973.

MLA-referens (8:e uppl.)

Não informado. Noise Control Engineering. Institute of Noise Control Engineering, 1973.

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