READER'S DIGEST ASSO. (1952). INVENTIONS THAT CHANGED THE WORLD. READERS DIGEST.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रREADER'S DIGEST ASSO. INVENTIONS THAT CHANGED THE WORLD. LONDON: READERS DIGEST, 1952.
एमएलए (9वां संस्करण) प्रशस्ति पत्रREADER'S DIGEST ASSO. INVENTIONS THAT CHANGED THE WORLD. READERS DIGEST, 1952.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.