APA

American National Standards Institute. ANSI S1.21-1972, . (1972). American National Standard methods for the determination of sound power levels of small sources in reverberation rooms. New York, NY: American National Standards Institute. ANSI S1.21-1972.

Chicago

American National Standards Institute. ANSI S1.21-1972, . 1972. American National Standard methods for the determination of sound power levels of small sources in reverberation rooms. New York, NY: American National Standards Institute. ANSI S1.21-1972.

Harvard

American National Standards Institute. ANSI S1.21-1972, . (1972). American National Standard methods for the determination of sound power levels of small sources in reverberation rooms. New York, NY: American National Standards Institute. ANSI S1.21-1972.

MLA

American National Standards Institute. ANSI S1.21-1972, . American National Standard methods for the determination of sound power levels of small sources in reverberation rooms. New York, NY: American National Standards Institute. ANSI S1.21-1972. 1972.