Woodruff , H. C. (1971). Short - wave listener`s guide (Enl. ed.). W. Foulsham.
Tohutoru Kātū Chicago (17th ed.)Woodruff , H. Charles. Short - Wave Listener`s Guide. Enl. ed. England: W. Foulsham, 1971.
Tohutoro MLA (9th ed.)Woodruff , H. Charles. Short - Wave Listener`s Guide. Enl. ed. W. Foulsham, 1971.
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