Não informado. Publications Newsletter. Control Data Corporation, Publications and Graphics Division.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Publications Newsletter. Saint Paul, Minn: Control Data Corporation, Publications and Graphics Division.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Publications Newsletter. Control Data Corporation, Publications and Graphics Division.
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