ASCE International Conference on Pipeline Engineering and Construction Boston, Mass, American Society of Civil Engineers. Pipeline Division, ebrary, Inc, Najafi, M., & Osborn, L. (2007). Pipelines 2007: Advances and experiences with trenchless pipeline projects : proceedings of the ASCE International Conference on Pipeline Engineering and Construction, July 8-11, 2007, Boston, Massachusetts. American Society of Civil Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ASCE International Conference on Pipeline Engineering and Construction Boston, Mass, American Society of Civil Engineers. Pipeline Division, Inc ebrary, Mohammad Najafi, و Lynn Osborn. Pipelines 2007: Advances and Experiences with Trenchless Pipeline Projects : Proceedings of the ASCE International Conference on Pipeline Engineering and Construction, July 8-11, 2007, Boston, Massachusetts. Reston, Va.: American Society of Civil Engineers, 2007.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ASCE International Conference on Pipeline Engineering and Construction Boston, Mass, et al. Pipelines 2007: Advances and Experiences with Trenchless Pipeline Projects : Proceedings of the ASCE International Conference on Pipeline Engineering and Construction, July 8-11, 2007, Boston, Massachusetts. American Society of Civil Engineers, 2007.