Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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