Não informado. (1951). Journal of the Agricultural Society of Trinidad and Tobago. Agricultural Society of Trinidad and Tobago.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Agricultural Society of Trinidad and Tobago. Port of Spain: Agricultural Society of Trinidad and Tobago, 1951.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Agricultural Society of Trinidad and Tobago. Agricultural Society of Trinidad and Tobago, 1951.
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