Butterworth & Co. (1924). The English and Empire Digest: Decents & Distribution, Discovery, Distreos. Butterworth & Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रButterworth & Co. The English and Empire Digest: Decents & Distribution, Discovery, Distreos. London: Butterworth & Co, 1924.
एमएलए (9वां संस्करण) प्रशस्ति पत्रButterworth & Co. The English and Empire Digest: Decents & Distribution, Discovery, Distreos. Butterworth & Co, 1924.
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