From the same source (4)

I believe the answer is:

ibid

(Other definitions for ibid that I've seen before include "(With written references) in the same place (Latin)" , "In the same place (Latin abbr)" , "(When citing a reference) in the same place (Latin)" , "Briefly, in the same book or passage" , "In the same place (L)" .)

I've seen this clue in The Guardian.

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