Summers, H. B. (1971). A thirty-year History of programs carried on national radio networks in the united states 1926-1956. Arno press.
Cóipeáladh chuig an ngearrthaisce go rathúil é
Níorbh fhéidir cóipeáil chuig an ngearrthaisce
Lua i Stíl Chicago (17ú heag.)
Summers, Harrison B. A Thirty-year History of Programs Carried on National Radio Networks in the United States 1926-1956. New York: Arno press, 1971.
Cóipeáladh chuig an ngearrthaisce go rathúil é
Níorbh fhéidir cóipeáil chuig an ngearrthaisce
Lua MLA (9ú heag.)
Summers, Harrison B. A Thirty-year History of Programs Carried on National Radio Networks in the United States 1926-1956. Arno press, 1971.
Cóipeáladh chuig an ngearrthaisce go rathúil é
Níorbh fhéidir cóipeáil chuig an ngearrthaisce
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.