definitions of reference
Definition of reference - Merriam-Webster Online Dictionary
http://www.m-w.com/dictionary/reference
reference - OneLook Dictionary Search
http://www.onelook.com/?w=reference&ls=a
reference - yourDictionary.com - American Heritage Dictionary
http://www.yourdictionary.com/ahd/r/r0114200.html
AskOxford: reference
http://www.askoxford.com/concise_oed/reference?view=uk
dict.org- reference
http://www.dict.org/bin/Dict?Form=Dict2&Database=*&Query=reference
reference definition - Dictionary - MSN Encarta
http://encarta.msn.com/dictionary_/reference.html
reference - definition of reference by the Free Online Dictionary, Thesaurus and Encyclopedia.
http://www.thefreedictionary.com/reference
reference - Definitions from Dictionary.com
http://dictionary.reference.com/browse/reference
Cambridge Dictionaries Online - Cambridge University Press
http://dictionary.cambridge.org/results.asp?searchword=reference&x=16 &y=11
reference - Wiktionary
http://en.wiktionary.org/wiki/reference
to be continued