^Martin, C. G. C. (1980). Maps and surveys of Malaŵi: a history of cartography and the land survey profession: exploration methods of David Livingstone on Lake "Nyassa": hydrographic survey and international boundaries: geographical, environmental, and land registration data in central Africa. Cape Town: A.A. Balkema. p. 109. ISBN9780869611135.
^"Kaiser Hit by a Missile Thrown into His Carriage", Chicago Daily Tribune, March 7, 1901, p. 1.
^Harold Brearley (1957). The Development of the Trolley Bus. Oakwood Press. p. 8.
^McMurray, Jonathan (2001). Distant ties: Germany, the Ottoman Empire, and the construction of the Baghdad Railway. Westport, Conn: Praeger. p. 64. ISBN9780275970635.
^This article incorporates text from a publication that prior to 1923, is in the public domain: "Rheinberger, Josef Gabriel, 1839—1901", The Etude, Philadelphia: Theodore Presser Company
^Hannavy, John (2013). Encyclopedia of nineteenth-century photography. London: Routledge. p. 1484. ISBN9781135873264.
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