Walther, R. A., & Walther, R. A. (2007). Bridge construction inspection course: Participant workbook. Washington, D.C.: National Highway Institute.
Chicago Style CitationWalther, Richard A., and Richard A. Walther. Bridge Construction Inspection Course: Participant Workbook. Washington, D.C.: National Highway Institute, 2007.
MLA CitationWalther, Richard A., and Richard A. Walther. Bridge Construction Inspection Course: Participant Workbook. Washington, D.C.: National Highway Institute, 2007.
Warning: These citations may not always be 100% accurate.