APA
Royal Institution of Chartered Surveyors, . (1991). Statements of asset valuation practice and guidance notes (third edition). Amendments 1 - April 1991. London: RICS.
Chicago
Royal Institution of Chartered Surveyors, . 1991. Statements of asset valuation practice and guidance notes (third edition). Amendments 1 - April 1991. London: RICS.
Harvard
Royal Institution of Chartered Surveyors, . (1991). Statements of asset valuation practice and guidance notes (third edition). Amendments 1 - April 1991. London: RICS.
MLA
Royal Institution of Chartered Surveyors, . Statements of asset valuation practice and guidance notes (third edition). Amendments 1 - April 1991. London: RICS. 1991.