Nygren, A. (1960). Essence of Christianity: Two essays. William B. Eerdmans Publishing Co..
Cita Chicago (17th ed.)Nygren, Anders. Essence of Christianity: Two Essays. Grand Rapids: William B. Eerdmans Publishing Co., 1960.
Cita MLA (9th ed.)Nygren, Anders. Essence of Christianity: Two Essays. William B. Eerdmans Publishing Co., 1960.
Atenció: Aquestes cites poden no estar 100% correctes.