National Research Council (U.S.). Transportation Research Board. Committee on Maintenance and Operations Personnel & American Association of State Highway and Transportation Officials. Subcommittee on Maintenance. (1980). Progress report on maintenance and operations personnel. Transportation Research Board.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Transportation Research Board. Committee on Maintenance and Operations Personnel এবং American Association of State Highway and Transportation Officials. Subcommittee on Maintenance. Progress Report on Maintenance and Operations Personnel. Washington, D.C: Transportation Research Board, 1980.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Transportation Research Board. Committee on Maintenance and Operations Personnel এবং American Association of State Highway and Transportation Officials. Subcommittee on Maintenance. Progress Report on Maintenance and Operations Personnel. Transportation Research Board, 1980.