APA
British Standards Institution, . (1998). Guide to the principles of the conservation of historic buildings. London: BSI.
Chicago
British Standards Institution, . 1998. Guide to the principles of the conservation of historic buildings. London: BSI.
Harvard
British Standards Institution, . (1998). Guide to the principles of the conservation of historic buildings. London: BSI.
MLA
British Standards Institution, . Guide to the principles of the conservation of historic buildings. London: BSI. 1998.
