Altorfer, K. (2018). Obituary: Peter Kelterborn (4 July 1928 – 9 March 2017). EXARC.
Cita Chicago Style (17a ed.)Altorfer, Kurt. Obituary: Peter Kelterborn (4 July 1928 – 9 March 2017). EXARC, 2018.
Cita MLA (8a ed.)Altorfer, Kurt. Obituary: Peter Kelterborn (4 July 1928 – 9 March 2017). EXARC, 2018.
Precaución: Estas citas no son 100% exactas.