Towers, W. K. Masters of Space Morse and the Telegraph; Thompson and the Cable; Bell and the Telephone; Marconi and the Wireless Telegraph; Carty and the Wireless Telephone.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTowers, Walter Kellogg. Masters of Space Morse and the Telegraph; Thompson and the Cable; Bell and the Telephone; Marconi and the Wireless Telegraph; Carty and the Wireless Telephone.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTowers, Walter Kellogg. Masters of Space Morse and the Telegraph; Thompson and the Cable; Bell and the Telephone; Marconi and the Wireless Telegraph; Carty and the Wireless Telephone.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.