Government, G. B. M. o. H. a. L., & Government, G. B. M. o. H. a. L. (1969). Preservation of historic buildings and areas. London : Her Majesty's Stationery Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)Government, Great Britain. Ministry of Housing and Local, και Great Britain. Ministry of Housing and Local Government. Preservation of Historic Buildings and Areas. London : Her Majesty's Stationery Office, 1969.
Παραπομπή σε μορφή MLA (9th εκδ.)Government, Great Britain. Ministry of Housing and Local, και Great Britain. Ministry of Housing and Local Government. Preservation of Historic Buildings and Areas. London : Her Majesty's Stationery Office, 1969.
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