@book{Toynbee, author = {Toynbee, A. J.}, title = {Hellenism. The history of a civilization, London (Oxford University Press) 1959.}, language = {en} } @book{Toynbee, author = {Toynbee, A. J.}, title = {Greek civilization and character, New York (Mentor Books) 1959.}, language = {en} }