1) Aforementioned 2) As mentioned 3) As mentioned before 4) As previously mentioned 5) Bibliographic note 6) Bibliographic word 7) Bibliography 8) Bibliography entry 9) Bibliography word 10) By the same 11) Citation word 12) Common footnote 13) Footnote notation 14) Footnote pronoun 15) Footnote word 1) Ditto 
Id. (masculine and neuter) and ead. (feminine) (Latin, short for idem and eadem, `the same`) are the terms used to denote the previously cited source (compare ibid.). Id. is particularly used in legal citations. They are also used in academic citations where the term replaces the name of a repeated author. Id. is used extensively in Canadian leg.....
• (pron. / adj.) The same; the same as above; -- often abbreviated id.
Italian Derivatives Market
The Latin term 'Idem' means, in a UK legal context: 'the same person or thing'.
I'dem pron. or adj. [ Latin ] The same; the same as above; -- often abbreviated id. 
Idem is Latin for the same
idem; id. The same. The same word, the same author, or the same publication.
The same person or thing
the same as previously given or mentioned.