De administrando imperio liber

Constantinus, VII Porphyrogenetus, De administrando imperio liber, in: Patrologiae Cursus Completus, Series Graeca‎ 113, edited by Migne‎, J. P., Paris‎, 1857-1866: cols. 157–422.
‎♦ b. 905, Byzantine emperor 944–959; A handbook on the administration of the empire