APA
Royal Institution of Chartered Surveyors, . (2001). Geographical directory 2001. London: Waterlow Specialist Information Publishing Ltd.
Chicago
Royal Institution of Chartered Surveyors, . 2001. Geographical directory 2001. London: Waterlow Specialist Information Publishing Ltd.
Harvard
Royal Institution of Chartered Surveyors, . (2001). Geographical directory 2001. London: Waterlow Specialist Information Publishing Ltd.
MLA
Royal Institution of Chartered Surveyors, . Geographical directory 2001. London: Waterlow Specialist Information Publishing Ltd. 2001.