(1973). Practicing His presence / by Frank Laubach and Brother Lawrence.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPracticing His Presence / by Frank Laubach and Brother Lawrence. 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPracticing His Presence / by Frank Laubach and Brother Lawrence. 1973.
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