American Telephone and Telegraph Company & American Telephone and Telegraph Company. Information Dept. Bell Telephone magazine. American Telephone and Telegraph Co., etc.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Telephone and Telegraph Company और American Telephone and Telegraph Company. Information Dept. Bell Telephone Magazine. [New York: American Telephone and Telegraph Co., etc.].
एमएलए (8वां संस्करण) प्रशस्ति पत्रAmerican Telephone and Telegraph Company और American Telephone and Telegraph Company. Information Dept. Bell Telephone Magazine. American Telephone and Telegraph Co., etc.].
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.