Orton, J., Orton, J., & Mitchell, P. (2013). Late Holocene archaeology in Namaqualand, South Africa: Hunter-gatherers and herders in a semi-arid environment.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrton, J., Jayson Orton, और P. Mitchell. Late Holocene Archaeology in Namaqualand, South Africa: Hunter-gatherers and Herders in a Semi-arid Environment. 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrton, J., et al. Late Holocene Archaeology in Namaqualand, South Africa: Hunter-gatherers and Herders in a Semi-arid Environment. 2013.
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