Bolt, M. (1984). The human connection: How people change people. InterVarsity.
Cita Chicago (17th ed.)Bolt, Martin. The Human Connection: How People Change People. Downers Grove: InterVarsity, 1984.
Cita MLA (9th ed.)Bolt, Martin. The Human Connection: How People Change People. InterVarsity, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.