Cita APA

Troeh, F. R., & Donahue, R. L. 1. (2003). Dictionary of agricultural and environmental science (1. edition.). Iowa: Iowa State Press.

Citación estilo Chicago

Troeh, Frederick R., y Roy Luther 1908- Donahue. Dictionary of Agricultural and Environmental Science. 1. edition. Iowa: Iowa State Press, 2003.

Cita MLA

Troeh, Frederick R., y Roy Luther 1908- Donahue. Dictionary of Agricultural and Environmental Science. 1. edition. Iowa: Iowa State Press, 2003.