APA

Bowersock G., Brown P. & Grabar O. (1999). Late Antiquiti. A guide to the postclassical world. London: The belknap press of Harvard university press.

Chicago

Bowersock G.W, Brown P and Grabar O. 1999. Late Antiquiti. A guide to the postclassical world. London: The belknap press of Harvard university press.

Harvard

Bowersock G., Brown P. and Grabar O. (1999). Late Antiquiti. A guide to the postclassical world. London: The belknap press of Harvard university press.

MLA

Bowersock G.W, Brown P and Grabar O. Late Antiquiti. A guide to the postclassical world. London: The belknap press of Harvard university press. 1999.