Não informado. (1984). Journal of the Grassland Society of Southern Africa. Grassland Society of Southern Africa.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Grassland Society of Southern Africa. Pretoria, Africa do Sul: Grassland Society of Southern Africa, 1984.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Grassland Society of Southern Africa. Grassland Society of Southern Africa, 1984.
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