Winterbottom, J. M. (1966). A list of the birds of the Ceres District. Percy FitzPatrick Institute of African Ornithology.
Chicago-viite (17. p.)Winterbottom, J. M. A List of the Birds of the Ceres District. [Rondebosch, C.P., South Africa]: Percy FitzPatrick Institute of African Ornithology, 1966.
MLA-viite (8. p.)Winterbottom, J. M. A List of the Birds of the Ceres District. Percy FitzPatrick Institute of African Ornithology, 1966.
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