Gaya APA

Nicholas, H, L., Day, D, A. (1976). Moving The Earth, The Workbook Of Excavation, Fifth Edition . New York: McGraw-Hill Company, Inc.

Gaya MLA

Nicholas, Herbert, L.., Day, David, A.. "Moving The Earth, The Workbook Of Excavation, Fifth Edition". New York: McGraw-Hill Company, Inc, 1976. Text.