Butterworth & Co. (1923). The English and Empire Digest Contract. Butterworth & Co.
Lua i Stíl Chicago (17ú heag.)Butterworth & Co. The English and Empire Digest Contract. London: Butterworth & Co, 1923.
Lua MLA (9ú heag.)Butterworth & Co. The English and Empire Digest Contract. Butterworth & Co, 1923.
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