APA
Joint Contracts Tribunal, . (1994). Standard Form of Building Contract 1980 edition (incorporating Amendments 1 to 13). Practice Note 26: Valuation and certification for interim payments including variations. London: RIBA Publications Ltd.
Chicago
Joint Contracts Tribunal, . 1994. Standard Form of Building Contract 1980 edition (incorporating Amendments 1 to 13). Practice Note 26: Valuation and certification for interim payments including variations. London: RIBA Publications Ltd.
Harvard
Joint Contracts Tribunal, . (1994). Standard Form of Building Contract 1980 edition (incorporating Amendments 1 to 13). Practice Note 26: Valuation and certification for interim payments including variations. London: RIBA Publications Ltd.
MLA
Joint Contracts Tribunal, . Standard Form of Building Contract 1980 edition (incorporating Amendments 1 to 13). Practice Note 26: Valuation and certification for interim payments including variations. London: RIBA Publications Ltd. 1994.
