Scullin, C. M. (1983). Excavation and grading code administration, inspection and enfocement. Prentice-Hall of India.
استشهاد بنمط شيكاغوScullin, C Michael. Excavation and Grading Code Administration, Inspection and Enfocement. New Jersey: Prentice-Hall of India, 1983.
MLA استشهادScullin, C Michael. Excavation and Grading Code Administration, Inspection and Enfocement. Prentice-Hall of India, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.