Goldsmith, A. N., & Lescarboura, A. C. (1930). This thing called broadcasting (1. Aufl.). Holt and company.

Goldsmith, Alfred N., and Austin C. Lescarboura. This Thing Called Broadcasting. 1. Aufl. New York: Holt and company, 1930.

Goldsmith, Alfred N., and Austin C. Lescarboura. This Thing Called Broadcasting. 1. Aufl. Holt and company, 1930.