Cita APA

Barney, G. O., Blewett, J., & Barney, K. R. (1993). Global 2000 revisited: What shall we do? Millenium Institute.

Citación estilo Chicago

Barney, Gerald O., Jane Blewett, and Kristen R. Barney. Global 2000 Revisited: What Shall We Do? Arlington, Va.: Millenium Institute, 1993.

Cita MLA

Barney, Gerald O., et al. Global 2000 Revisited: What Shall We Do? Millenium Institute, 1993.