APA (7th ed.) Citation

Johannsen, K. (1993). A mathematical description of (open) loudspeaker boxes. IWR.

Chicago Style (17th ed.) Citation

Johannsen, Klaus. A Mathematical Description of (open) Loudspeaker Boxes. Heidelberg: IWR, 1993.

MLA (9th ed.) Citation

Johannsen, Klaus. A Mathematical Description of (open) Loudspeaker Boxes. IWR, 1993.

Warning: These citations may not always be 100% accurate.