APA
Heard G., . (1940). The creed of Christ: an interpretation of the Lord's prayer. New York and London: Harper & brothers.
Chicago
Heard Gerald, . 1940. The creed of Christ: an interpretation of the Lord's prayer. New York and London: Harper & brothers.
Harvard
Heard G., . (1940). The creed of Christ: an interpretation of the Lord's prayer. New York and London: Harper & brothers.
MLA
Heard Gerald, . The creed of Christ: an interpretation of the Lord's prayer. New York and London: Harper & brothers. 1940.