Não informado. (1995). African Plant Protection. Agricultural Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. African Plant Protection. Arcadia, Africa do Sul: Agricultural Research Council, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. African Plant Protection. Agricultural Research Council, 1995.
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