Castles : a guide for young people

MLA

Gregor, Hugh. Castles : a Guide for Young People. London: Her Majesty's Stationery Office, 1981.

APA

Gregor, H. (1981). Castles : a guide for young people. London: Her Majesty's Stationery Office.

Chicago

Gregor, Hugh. Castles: A Guide for Young People. London: Her Majesty's Stationery Office, 1981.