APA
Joint Contracts Tribunal, . (1990). Standard form of building contract with contractor`s design 1981 edition ... amendment 6 and guidance notes issued November 1990. London: RIBA Publications Ltd.
Chicago
Joint Contracts Tribunal, . 1990. Standard form of building contract with contractor`s design 1981 edition ... amendment 6 and guidance notes issued November 1990. London: RIBA Publications Ltd.
Harvard
Joint Contracts Tribunal, . (1990). Standard form of building contract with contractor`s design 1981 edition ... amendment 6 and guidance notes issued November 1990. London: RIBA Publications Ltd.
MLA
Joint Contracts Tribunal, . Standard form of building contract with contractor`s design 1981 edition ... amendment 6 and guidance notes issued November 1990. London: RIBA Publications Ltd. 1990.