William A. Hance and Irene S. van Dongen (oktober 1956). «The Port of Lobito and the Benguela Railway». Geographical Review. American Geographical Society. 46 (4): 460–487. JSTOR212105. doi:10.2307/212105.
William A. Hance and Irene S. van Dongen (oktober 1956). «The Port of Lobito and the Benguela Railway». Geographical Review. American Geographical Society. 46 (4): 460–487. JSTOR212105. doi:10.2307/212105.
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«Arkivert kopi». Arkivert fra originalen 2. april 2015. Besøkt 30. mars 2015. "Tanks Group Archive c. 1900-1960s"].