APA

Kelly J. N. D., . (1978). Early Christian doctrines. New York: Harper.

Chicago

Kelly J N D, . 1978. Early Christian doctrines. New York: Harper.

Harvard

Kelly J. N. D., . (1978). Early Christian doctrines. New York: Harper.

MLA

Kelly J N D, . Early Christian doctrines. New York: Harper. 1978.