APA

Grant F. C., . (1922). The early Days of Christianity. New York: The Abingdon Press.

Chicago

Grant Frederick C, . 1922. The early Days of Christianity. New York: The Abingdon Press.

Harvard

Grant F. C., . (1922). The early Days of Christianity. New York: The Abingdon Press.

MLA

Grant Frederick C, . The early Days of Christianity. New York: The Abingdon Press. 1922.