Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Fortress: The castles and fortifications quarterly. Beaufort Publishing.

Chicago Citation Edition Citation

Fortress: The Castles and Fortifications Quarterly. Liphook: Beaufort Publishing.

MLA Citation Edition Citation

Fortress: The Castles and Fortifications Quarterly. Beaufort Publishing.