Cita APA

Nichols, H. L. 1., & Day, D. A. 1. (2005). Moving the earth: The workbook of excavation (5. edition.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Nichols, Herbert Lownds 1908-, y David A. 1924- Day. Moving the Earth: The Workbook of Excavation. 5. edition. New York, New York: McGraw-Hill, 2005.

Cita MLA

Nichols, Herbert Lownds 1908-, y David A. 1924- Day. Moving the Earth: The Workbook of Excavation. 5. edition. New York, New York: McGraw-Hill, 2005.