APA

Blackwood A. W., . (1948). The preparation of sermons. New York: Abingdon-Cokesbury Press.

Chicago

Blackwood Andrew Watterson, . 1948. The preparation of sermons. New York: Abingdon-Cokesbury Press.

Harvard

Blackwood A. W., . (1948). The preparation of sermons. New York: Abingdon-Cokesbury Press.

MLA

Blackwood Andrew Watterson, . The preparation of sermons. New York: Abingdon-Cokesbury Press. 1948.