Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 108–115. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 113. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 114. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 110. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 112. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 108–115. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 113. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 114. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 110. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 112. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 108–115. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 113. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 114. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 110. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.
Miller, Duncan (1992). "Pioneering Metallographic Analyses of Indigenous Metal Artefacts from Southern Africa: Material Collected by the Frobenius Expedition in 1929/1930". The South African Archaeological Bulletin. 47 (156): 112. doi:10.2307/3889206. ISSN0038-1969. JSTOR3889206.