Cita APA (7a ed.)

Barney, G. O., Blewett, J., & Barney, K. R. (1998). Threshold 2000: Critical issues and spiritual values for a global age. Millennium Institute ; CoNexus Press.

Cita Chicago Style (17a ed.)

Barney, Gerald O., Jane Blewett, y Kristen R. Barney. Threshold 2000: Critical Issues and Spiritual Values for a Global Age. Arlington, VA : Grand Rapids: Millennium Institute ; CoNexus Press, 1998.

Cita MLA (8a ed.)

Barney, Gerald O., et al. Threshold 2000: Critical Issues and Spiritual Values for a Global Age. Millennium Institute ; CoNexus Press, 1998.