R. Singer. Mythical African 'Australoids' and Triangular Bricks: The Cape Flats Skull in Retrospect. The South African Archaeological Bulletin, South African Archaeological Society, volume 48, issue 158, pages 105-112, 1993.

R. Singer. Mythical {African'Australoids'} and triangular bricks: The Cape Flats skull in retrospect. The South African Archaeological Bulletin, JSTOR, pages 105-112, 1993.

R. Singer. Mythical African 'Australoids' and Triangular Bricks: The Cape Flats Skull in Retrospect. The South African Archaeological Bulletin, South African Archaeological Society, volume 48, issue 158, pages 105-112, 1993.

R. Singer. The Saldana skull from Hopefield, South Africa. Am. J. Phys. Anthropol., volume 12, pages 345-362, 1954.