Barney, G. O., Blewett, J., & Barney, K. R. (1993). Global 2000 revisited: What shall we do? Millenium Institute.
Lua i Stíl Chicago (17ú heag.)Barney, Gerald O., Jane Blewett, agus Kristen R. Barney. Global 2000 Revisited: What Shall We Do? Arlington, Va.: Millenium Institute, 1993.
Lua MLA (8ú heag.)Barney, Gerald O., et al. Global 2000 Revisited: What Shall We Do? Millenium Institute, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.