Thomas, H. R., & Ellis, R. D. (2017). Construction site management and labor productivity improvement: How to improve the bottom line and shorten project schedules. American Society of Civil Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Thomas, H. Randolph, و Ralph D. Ellis. Construction Site Management and Labor Productivity Improvement: How to Improve the Bottom Line and Shorten Project Schedules. Reston, Virginia: American Society of Civil Engineers, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Thomas, H. Randolph, و Ralph D. Ellis. Construction Site Management and Labor Productivity Improvement: How to Improve the Bottom Line and Shorten Project Schedules. American Society of Civil Engineers, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.