APA
Zwikker C., Kosten C. W., . (1949). Sound absorbing materials. New York: Elsevier.
Chicago
Zwikker Cornelis, Kosten Cornelis Willem, . 1949. Sound absorbing materials. New York: Elsevier.
Harvard
Zwikker C., Kosten C. W., . (1949). Sound absorbing materials. New York: Elsevier.
MLA
Zwikker Cornelis, Kosten Cornelis Willem, . Sound absorbing materials. New York: Elsevier. 1949.