The architecture of castles :
a visual guide /
R. Allen Brown.

APA Citation

Brown, R. Allen (Reginald Allen). (1984). The architecture of castles: a visual guide. London: Batsford.

MLA Citation

Brown, R. Allen (Reginald Allen), 1924-. The Architecture of Castles: a Visual Guide. London: Batsford, 1984.

Warning: These citations may not always be complete (especially for serials).