John of Damascus, Saint.
Barlaam and Ioasaph /
St. John Damascene ; with an English translation by the G.R. Woodward, H. Mattingly ; introduction by D.M. Lang 
. - London : William Heinemann Ltd, Cambridge : Harvard University Press,  1967 
. - xxxiii, 639 p.  17 cm. 
 - The Loeb classical library  34 .