Karoly, L. A., & Panis, C. W. A. (2004). The 21st century at work: Forces shaping the future workforce and workplace in the United States. RAND.
Lua i Stíl Chicago (17ú heag.)Karoly, Lynn A., agus Constantijn W. A. Panis. The 21st Century at Work: Forces Shaping the Future Workforce and Workplace in the United States. Santa Monica, Calif.: RAND, 2004.
Lua MLA (9ú heag.)Karoly, Lynn A., agus Constantijn W. A. Panis. The 21st Century at Work: Forces Shaping the Future Workforce and Workplace in the United States. RAND, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.