APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.