Cita APA (7a ed.)

Kurzweil, R. (1999). The age of spiritual machines: How we will live, work and think in the new age of intelligent machines. Phoenix.

Cita Chicago Style (17a ed.)

Kurzweil, Raymond. The Age of Spiritual Machines: How We Will Live, Work and Think in the New Age of Intelligent Machines. London: Phoenix, 1999.

Cita MLA (9a ed.)

Kurzweil, Raymond. The Age of Spiritual Machines: How We Will Live, Work and Think in the New Age of Intelligent Machines. Phoenix, 1999.