Standke, G. R. (1996). Headquater South Africa: Siemens-Bürozentrale in Midrand. Bauwelt.
Lua i Stíl Chicago (17ú heag.)Standke, Gunter R. "Headquater South Africa: Siemens-Bürozentrale in Midrand." Bauwelt 1996.
Lua MLA (8ú heag.)Standke, Gunter R. "Headquater South Africa: Siemens-Bürozentrale in Midrand." Bauwelt, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.