Cita APA (7a ed.)

Líbal, D. (1992). Castles and fortifications of Britain and Europe. Hamlyn.

Cita Chicago Style (17a ed.)

Líbal, Dobroslav. Castles and Fortifications of Britain and Europe. London: Hamlyn, 1992.

Cita MLA (9a ed.)

Líbal, Dobroslav. Castles and Fortifications of Britain and Europe. Hamlyn, 1992.