Style de citation APA

 Troeh, F. R. (2003).  Dictionary of Agricultural and Environmental Science.  Iowa State Press.

Style de citation Chicago

 Troeh, Frederick R.  Dictionary of Agricultural and Environmental Science.  Iowa State Press, 2003.

Style de citation MLA

 Troeh, Frederick R.  Dictionary of Agricultural and Environmental Science.  Iowa State Press, 2003.

Attention : ces citations peuvent ne pas être correctes à 100%.