Dyfyniad APA

Great Britain. Dept. of the Environment & Great Britain. Welsh Office. (1992). The Buildings Regulations 1991 (1992 ed., second impression (with amendments) 1992.). H.M.S.O..

Dyfyniad Arddull Chicago

Great Britain. Dept. of the Environment and Great Britain. Welsh Office. The Buildings Regulations 1991. 1992 ed., second impression (with amendments) 1992. London: H.M.S.O., 1992.

Dyfyniad MLA

Great Britain. Dept. of the Environment and Great Britain. Welsh Office. The Buildings Regulations 1991. 1992 ed., second impression (with amendments) 1992. H.M.S.O., 1992.

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