APA (7 वां संस्करण) प्रशस्ति पत्र
Shengold, L. (2014). The promise: Who is in charge of time and space? Karnac.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Shengold, Leonard. The Promise: Who Is in Charge of Time and Space? London, England: Karnac, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Shengold, Leonard. The Promise: Who Is in Charge of Time and Space? Karnac, 2014.
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