(1950). Library of Congress intermission broadcasts. 1950-04-13, no. 41, Close of the concert season.
Chicago-viite (17. p.)Library of Congress Intermission Broadcasts. 1950-04-13, No. 41, Close of the Concert Season. 1950.
MLA-viite (9. p.)Library of Congress Intermission Broadcasts. 1950-04-13, No. 41, Close of the Concert Season. 1950.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.