"The Social Market Economy" Federal Ministry for Economic Affairs and Energy, Federal Republic of Germany. Retrieved 11 September 2015
doi.org
Schoenborn, Benedikt (18 September 2008), "Bargaining with the Bear: Chancellor Erhard's Bid to Buy German Reunification, 1963–64", Cold War History Journal, 8 (1): 23–53, doi:10.1080/14682740701791318, S2CID153597101.
Blang, Eugenie M. (2004), "A Reappraisal of Germany's Vietnam Policy, 1963–1966: Ludwig Erhard's Response to America's War in Vietnam", German Studies Review, 27 (2): 341–360, doi:10.2307/1433086, JSTOR1433086.
jstor.org
Blang, Eugenie M. (2004), "A Reappraisal of Germany's Vietnam Policy, 1963–1966: Ludwig Erhard's Response to America's War in Vietnam", German Studies Review, 27 (2): 341–360, doi:10.2307/1433086, JSTOR1433086.
Schoenborn, Benedikt (18 September 2008), "Bargaining with the Bear: Chancellor Erhard's Bid to Buy German Reunification, 1963–64", Cold War History Journal, 8 (1): 23–53, doi:10.1080/14682740701791318, S2CID153597101.