Cita APA (7th ed.)
Hopkins, C. (2007). Sound Insulation. Routhledge.
Cita Chicago (17th ed.)
Hopkins, Carl. Sound Insulation. New York: Routhledge, 2007.
Cita MLA (9th ed.)
Hopkins, Carl. Sound Insulation. Routhledge, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.