@Book{BVMC:618261, author = {Ayala, Baltasar}, title = {Balthasaris Ayalae ... De jure et officiis bellicis ac disciplina militari, libri tres}, url = {https://www.cervantesvirtual.com/obra/balthasaris-ayalae--de-jure-et-officiis-bellicis-ac-disciplina-militari-libri-tres} }