Netherlands–South African Railway Company (English Wikipedia)

Van Helten, J.-J. (1978). "German Capital, the Netherlands Railway Company and the Political Economy of the Transvaal 1886-1900". Journal of African History. 19 (3): 369–390. doi:10.1017/S0021853700016212. JSTOR 181949. S2CID 163150608.
van Helten, JJ (1978). "German Capital, the Netherlands Railway Company and the Political Economy of the Transvaal 1886–1900". The Journal of African History. 19 (19 [3]): 369–390. doi:10.1017/S0021853700016212. JSTOR 181949. S2CID 163150608.

gahetna.nl

"NZASM". Het Geheugen van Nederland. Zuid-Afrikahuis. Retrieved 29 April 2016.

Van Helten, J.-J. (1978). "German Capital, the Netherlands Railway Company and the Political Economy of the Transvaal 1886-1900". Journal of African History. 19 (3): 369–390. doi:10.1017/S0021853700016212. JSTOR 181949. S2CID 163150608.
van Helten, JJ (1978). "German Capital, the Netherlands Railway Company and the Political Economy of the Transvaal 1886–1900". The Journal of African History. 19 (19 [3]): 369–390. doi:10.1017/S0021853700016212. JSTOR 181949. S2CID 163150608.

"A South African Railway History". Archived from the original on 16 July 2011. Retrieved 10 May 2016.

"Notes and Queries: Rail route centenary" (PDF). Natalia (19): 80–81. December 1991.

Zietsman, CF van R (July 1982). "Die bou van die Suidwestelyn, 1895–1897, en die NZASM-stasiegeboue op Krugersdorp en Klerksdorp" (PDF). Contree: Tydskrif vir Suid-Afrikaanse Stedelike en Streeksgeskiedenis/ Journal for South African Urban and Regional History: 5–9.

Plug, C (25 December 2014). "Moodie, Mr George Pigot (surveying)". S2A3 Biographical Database of Southern African Science. Retrieved 19 March 2017.

Van Helten, J.-J. (1978). "German Capital, the Netherlands Railway Company and the Political Economy of the Transvaal 1886-1900". Journal of African History. 19 (3): 369–390. doi:10.1017/S0021853700016212. JSTOR 181949. S2CID 163150608.
van Helten, JJ (1978). "German Capital, the Netherlands Railway Company and the Political Economy of the Transvaal 1886–1900". The Journal of African History. 19 (19 [3]): 369–390. doi:10.1017/S0021853700016212. JSTOR 181949. S2CID 163150608.

de Jong, Robert. "NZASM Structures of the Southern Line". The Heritage Portal. Retrieved 7 December 2016.

Seale, R (April 1987). "The Story of 'Roos'" (PDF). Pretoriana – Tydskrif van die Pretoriase Historiese Vereniging (Genootskap Ou-Pretoria) (91 (NZASM-Herdenkingsuitgawe)).
Wilburn, Kenneth E. (April 1987). "Cecil Rhodes, James Silverwright, and Paul Kruger: The Nature of Railway Diplomacy in South Africa, 1890–1892" (PDF). The Journal of African History (91).

"A South African Railway History". Archived from the original on 16 July 2011. Retrieved 10 May 2016.