Cita APA

Sprague, M., & Tripplett, G. (1986). No-tillage and surface-tillage agriculture: The tillage revolution. New York (EUA): John Wiley.

Citación estilo Chicago

Sprague, M.A., y G.B Tripplett. No-tillage and Surface-tillage Agriculture: The Tillage Revolution. New York (EUA): John Wiley, 1986.

Cita MLA

Sprague, M.A., y G.B Tripplett. No-tillage and Surface-tillage Agriculture: The Tillage Revolution. New York (EUA): John Wiley, 1986.