Nicholas, J. M., & Steyn, H. (2008). Project management for business, engineering and technologic principles and practice (3rd ed.). Butter worth-Heinemann.
استشهاد بنمط شيكاغوNicholas, John M., و Herman Steyn. Project Management for Business, Engineering and Technologic Principles and Practice. 3rd ed. Oxford: Butter worth-Heinemann, 2008.
MLA استشهادNicholas, John M., و Herman Steyn. Project Management for Business, Engineering and Technologic Principles and Practice. 3rd ed. Butter worth-Heinemann, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.