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Hans-Jürgen Ohff (2008): Empires of enterprise: German and English commercial interests in East New Guinea 1884 to 1914Thesis (PhD University of Adelaide, School of History and Politics) na p. 10.
Hans-Jürgen Ohff (2008): Empires of enterprise: German and English commercial interests in East New Guinea 1884 to 1914Thesis (Ph.D.) University of Adelaide, School of History and Politics, p. 26 quoting Schleinitz to Admiralty, 28 de decembro de 1875, Drucksache zu den Verhandlungen des Bundesrath, 1879, vol. 1, Denkschrift, xxiv–xxvii, p. 3.
Hans-Jürgen Ohff (2008): Empires of enterprise: German and English commercial interests in East New Guinea 1884 to 1914Thesis (Ph.D.) University of Adelaide, School of History and Politics, p. 62. "It is the aim of this thesis to demonstrate that specific and identifiable commercial interests, rather than politicians, defence or strategic concerns, ideology or morality were the driving forces behind what did or did not happen in the first 50 years of European settlement in East New Guinea and adjacent islands", na p. 10.
Hans-Jürgen Ohff (2008): Empires of enterprise: German and English commercial interests in East New Guinea 1884 to 1914Thesis (Ph.D.) University of Adelaide, School of History and Politics, pp. 62-63 citando a R. M. Smith (tr.) (1885): German Interests in the South Sea, abstracts of the White Book presented to the Reichstag, December 1884 and February 1885 and pinpoint reference 1884, Wb no. 19, p. 37; e engade "a full translation of Bismarck's speech was published by The Times on 25 June 1884 under the rubric 'German Colonial Policy', pp. 10–13."
