ibid
From Longman Dictionary of Contemporary Englishibidib‧id /ˈɪbɪd/ (also ibidem /ˈɪbɪdem, ɪˈbaɪdem/) adverb SAMEused in formal writing to mean from the same book, writer, or article as the one that has just been mentionedFrom Longman Business Dictionaryibidib‧id /ˈɪbɪd/ written abbreviation ib used to explain that something is from the same book or article as the one that has just been mentionedSYNidThese data are reflected in the estimates (ibid. p. 7).