APA
Jonas C., . (1993). Central London Branch supper 25 January 1993. Speech by Christopher Jonas, President of the Royal Institution of Chartered Surveyors. London: RICS.
Chicago
Jonas Christopher, . 1993. Central London Branch supper 25 January 1993. Speech by Christopher Jonas, President of the Royal Institution of Chartered Surveyors. London: RICS.
Harvard
Jonas C., . (1993). Central London Branch supper 25 January 1993. Speech by Christopher Jonas, President of the Royal Institution of Chartered Surveyors. London: RICS.
MLA
Jonas Christopher, . Central London Branch supper 25 January 1993. Speech by Christopher Jonas, President of the Royal Institution of Chartered Surveyors. London: RICS. 1993.
