APA
Royal Institution of Chartered Surveyors, . (1991). Rules and guide to the assessment of professional competence: Rural Practice June 1991. London: RICS.
Chicago
Royal Institution of Chartered Surveyors, . 1991. Rules and guide to the assessment of professional competence: Rural Practice June 1991. London: RICS.
Harvard
Royal Institution of Chartered Surveyors, . (1991). Rules and guide to the assessment of professional competence: Rural Practice June 1991. London: RICS.
MLA
Royal Institution of Chartered Surveyors, . Rules and guide to the assessment of professional competence: Rural Practice June 1991. London: RICS. 1991.