Cita APA

Gay, L., & Gay, L. (2007). Farm tractors, 1995-2005. St. Joseph, Mich.: American Society of Agricultural and Biological Engineers.

Citación estilo Chicago

Gay, Larry, y Larry Gay. Farm Tractors, 1995-2005. St. Joseph, Mich.: American Society of Agricultural and Biological Engineers, 2007.

Cita MLA

Gay, Larry, y Larry Gay. Farm Tractors, 1995-2005. St. Joseph, Mich.: American Society of Agricultural and Biological Engineers, 2007.