Resp. por: Ai, mocinho ! Bonanza. N. 10 (maio 1977)

https://authorities.loc.gov/ (jan./2019): (The National Broadcasting Company was founded in 1926 by General Electric, RCA, and Westinghouse) rems.)

https://viaf.org/processed/LC%7Cn%20%2080050398 (jan./2019): (The National Broadcasting Company was founded in 1926 by General Electric, RCA, and Westinghouse) rems.)