Unity of the Churches : an actual possibility / Heinrich Fries and Karl Rahner. - Fries, Heinrich. (OLS)http://pul/name/18917; Rahner, Karl, S.I., 1904-1984. (OLS)http://pul/name/3587 (Fortess Press, 1985)
Translated by Ruth C.L. Gritsch and Eric W. Gritsch.
Note bibliografiche: p. 146.