Cita APA

Nichols, H. L. 1., & Nichols, H. L. 1. (1976). Moving the earth: The workbook of excavation (3. edition.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Nichols, Herbert Lownds 1908-, y Herbert Lownds 1908- Nichols. Moving the Earth: The Workbook of Excavation. 3. edition. New York, New York: McGraw-Hill, 1976.

Cita MLA

Nichols, Herbert Lownds 1908-, y Herbert Lownds 1908- Nichols. Moving the Earth: The Workbook of Excavation. 3. edition. New York, New York: McGraw-Hill, 1976.