Ayala, Balthazar <br/><br/>
De jure et Officiis bellicis et Disciplina militari libri III 

 - Washington :   The Lord Baltimore Press,   1912. 
 -  tela ;   16 cm. 
<br/><br/> Vol. I: Reproduction of the 1a ed. With introduction by J. Westlake    Vol. II:Translation of the Text, by J. Pawley Bate translator's note and index of citations