Sproul, R. (1990). The mystery of the holy spirit. Tyndale house.
Cita Chicago (17th ed.)Sproul, R.C. The Mystery of the Holy Spirit. Wheaton: Tyndale house, 1990.
Cita MLA (9th ed.)Sproul, R.C. The Mystery of the Holy Spirit. Tyndale house, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.