Παραπομπή APA

Renn, D. F. (1971). Clifford's Tower and the castles of York. London: Her Majesty's Stationery Office.

Παραπομπή Chicago Style

Renn, D. F. Clifford's Tower and the Castles of York. London: Her Majesty's Stationery Office, 1971.

Παραπομπή MLA

Renn, D. F. Clifford's Tower and the Castles of York. London: Her Majesty's Stationery Office, 1971.

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