Skead, D. M. (1970). A preliminary list of the birds of the Wolmaransstad District, Transvaal. Percy FitzPatrick Institute of African Ornithology.
Čikaški stil citiranja (17. izdanje)Skead, David M. A Preliminary List of the Birds of the Wolmaransstad District, Transvaal. [Rondebosch, Cape, South Africa: Percy FitzPatrick Institute of African Ornithology, 1970.
MLA način citiranja (8. izdanje)Skead, David M. A Preliminary List of the Birds of the Wolmaransstad District, Transvaal. Percy FitzPatrick Institute of African Ornithology, 1970.
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