British Standards Institution. (1974). Specification for clay bricks and blocks (1st revision.). B.S.I..
Citación estilo ChicagoBritish Standards Institution. Specification for Clay Bricks and Blocks. 1st revision. London: B.S.I., 1974.
Cita MLABritish Standards Institution. Specification for Clay Bricks and Blocks. 1st revision. B.S.I., 1974.
Warning: These citations may not always be 100% accurate.