Cita APA (7th ed.)
Packer, J. (1984). Keep in step with the spirit. Inter-Varsity.
Cita Chicago (17th ed.)
Packer, J.I. Keep in Step with the Spirit. New Jersey: Inter-Varsity, 1984.
Cita MLA (9th ed.)
Packer, J.I. Keep in Step with the Spirit. Inter-Varsity, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.