APA (7th ed.) Citation

Kelly, J. N. D. (1968). Early Christian doctrines (4. ed.). Black.

Chicago Style (17th ed.) Citation

Kelly, John N. D. Early Christian Doctrines. 4. ed. London: Black, 1968.

MLA (9th ed.) Citation

Kelly, John N. D. Early Christian Doctrines. 4. ed. Black, 1968.