Hubbard, L. R. (2012). Letters and journals: Early years of adventure. Bridge Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHubbard, L. Ron. Letters and Journals: Early Years of Adventure. Commerce, California: Bridge Publications, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHubbard, L. Ron. Letters and Journals: Early Years of Adventure. Bridge Publications, 2012.
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