APA
Barth K., . (1963). The preaching of the gospel. Philadelphia: Westminster Press.
Chicago
Barth Karl, . 1963. The preaching of the gospel. Philadelphia: Westminster Press.
Harvard
Barth K., . (1963). The preaching of the gospel. Philadelphia: Westminster Press.
MLA
Barth Karl, . The preaching of the gospel. Philadelphia: Westminster Press. 1963.