Não informado. (1930). Agricultural Notes. Trinidad Tobago, Department of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Notes. Port of Spain: Trinidad Tobago, Department of Agriculture, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Notes. Trinidad Tobago, Department of Agriculture, 1930.
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