National Research Council (U.S.). Committee on Advanced Maintenance Concepts for Buildings, National Research Council (U.S.). Building Research Board, National Research Council (U.S.). Commission on Engineering and Technical Systems, & Jortberg, R. F. (1990). Committing to the cost of ownership: Maintenance and repair of public buildings. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Committee on Advanced Maintenance Concepts for Buildings, National Research Council (U.S.). Building Research Board, National Research Council (U.S.). Commission on Engineering and Technical Systems, و Robert F. Jortberg. Committing to the Cost of Ownership: Maintenance and Repair of Public Buildings. Washington, D.C.: National Academy Press, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Committee on Advanced Maintenance Concepts for Buildings, et al. Committing to the Cost of Ownership: Maintenance and Repair of Public Buildings. National Academy Press, 1990.