National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, University of Maryland. Dept. of Civil and Environmental Engineering, & Carter, E. C. (2001). Effective motivation of highway maintenance personnel: Tools for peak performance.
Cita Chicago (17th ed.)National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, University of Maryland. Dept. of Civil and Environmental Engineering, i Everett C. Carter. Effective Motivation of Highway Maintenance Personnel: Tools for Peak Performance. Washington, DC, 2001.
Cita MLA (9th ed.)National Cooperative Highway Research Program, et al. Effective Motivation of Highway Maintenance Personnel: Tools for Peak Performance. 2001.