Não informado. (1932). Report and accounts of the National Botanic Gardens of South Africa. National Botanic Gardens of South Africa.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report and Accounts of the National Botanic Gardens of South Africa. Cape Town, Africa do Sul: National Botanic Gardens of South Africa, 1932.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report and Accounts of the National Botanic Gardens of South Africa. National Botanic Gardens of South Africa, 1932.
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