Orr, W. I. (1978). Radio handbook: Twenty-first edition. ndianapolis: Editors and Engineers.
Trích dẫn kiểu ChicagoOrr, William I. Radio Handbook: Twenty-first Edition. ndianapolis: Editors and Engineers, 1978.
MLA引文Orr, William I. Radio Handbook: Twenty-first Edition. ndianapolis: Editors and Engineers, 1978.
警告：這些引文格式不一定是100％准確.