Birch, J. (1980). The castles and fortified houses of South Yorkshire.
Chicago Style (17th ed.) CitationBirch, Julian. The Castles and Fortified Houses of South Yorkshire. 1980.
MLA (9th ed.) CitationBirch, Julian. The Castles and Fortified Houses of South Yorkshire. 1980.
Warning: These citations may not always be 100% accurate.