APA (7e ed.) Bronvermelding

Nichols, H. L., & Day, D. A. (2005). Moving the earth: The workbook of excavation (Fifth edition.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Nichols, Herbert L., en David A. Day. Moving the Earth: The Workbook of Excavation. Fifth edition. New York: McGraw-Hill, 2005.

MLA (9e ed.) Bronvermelding

Nichols, Herbert L., en David A. Day. Moving the Earth: The Workbook of Excavation. Fifth edition. McGraw-Hill, 2005.