APA
John XXIII, . (1969). Lectures. New York: John XXIII Center for Eastern Christian Studies Fordham.
Chicago
John XXIII, . 1969. Lectures. New York: John XXIII Center for Eastern Christian Studies Fordham.
Harvard
John XXIII, . (1969). Lectures. New York: John XXIII Center for Eastern Christian Studies Fordham.
MLA
John XXIII, . Lectures. New York: John XXIII Center for Eastern Christian Studies Fordham. 1969.
