Baker, G. P., & Hubbard, T. N. (2000). Contractibility and assset ownership: On-board computers and governance in U.S. trucking. National Bureau of Economic Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Baker, George P., و Thomas N. Hubbard. Contractibility and Assset Ownership: On-board Computers and Governance in U.S. Trucking. Cambridge: National Bureau of Economic Research, 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Baker, George P., و Thomas N. Hubbard. Contractibility and Assset Ownership: On-board Computers and Governance in U.S. Trucking. National Bureau of Economic Research, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.