APA

Orr W. I., . (1981). Radio handbook. New delhi: Howard w. sams.

Chicago

Orr William I, . 1981. Radio handbook. New delhi: Howard w. sams.

Harvard

Orr W. I., . (1981). Radio handbook. New delhi: Howard w. sams.

MLA

Orr William I, . Radio handbook. New delhi: Howard w. sams. 1981.