Cita APA (7a ed.)

Elton, D. J. (2001). Soils magic. American Society of Civil Engineers.

Cita Chicago Style (17a ed.)

Elton, David J. Soils Magic. Reston, VA: American Society of Civil Engineers, 2001.

Cita MLA (9a ed.)

Elton, David J. Soils Magic. American Society of Civil Engineers, 2001.