APA

Boase T. . S. . R., Cleave R., . (1967). Castles and Churches of the Crusading Kingdom. London: Oxford University Press.

Chicago

Boase T S R, Cleave Richard, . 1967. Castles and Churches of the Crusading Kingdom. London: Oxford University Press.

Harvard

Boase T. . S. . R., Cleave R., . (1967). Castles and Churches of the Crusading Kingdom. London: Oxford University Press.

MLA

Boase T S R, Cleave Richard, . Castles and Churches of the Crusading Kingdom. London: Oxford University Press. 1967.